title: Study of e(+)e(-)→ωχ(cJ) at center of mass energies from 4.21 to 4.42 GeV.
abstract: Based on data samples collected with the BESIII detector at the BEPCII collider at nine center of mass energies from 4.21 to 4.42 GeV, we search for the production of e^{+}e^{-}→ωχ_{cJ} (J=0, 1, 2). The process e^{+}e^{-}→ωχ_{c0} is observed for the first time, and the Born cross sections at sqrt[s]=4.23 and 4.26 GeV are measured to be (55.4±6.0±5.9) and (23.7±5.3±3.5)  pb, respectively, where the first uncertainties are statistical and the second are systematic. The ωχ_{c0} signals at the other seven energies and the e^{+}e^{-}→ωχ_{c1} and ωχ_{c2} signals are not significant, and the upper limits on the cross sections are determined. By examining the ωχ_{c0} cross section as a function of center of mass energy, we find that it is inconsistent with the line shape of the Y(4260) observed in e^{+}e^{-}→π^{+}π^{-}J/ψ. Assuming the ωχ_{c0} signals come from a single resonance, we extract the mass and width of the resonance to be (4230±8±6)  MeV/c^{2} and (38±12±2)  MeV, respectively, and the statistical significance is more than 9σ.
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: M
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authors: Ablikim
authors: G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
authors: M N
authors: MN
authors: Achasov
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X C
authors: XC
authors: Ai
authors: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
authors: O
authors: O
authors: Albayrak
authors: Bochum Ruhr-University, D-44780 Bochum, Germany.
authors: M
authors: M
authors: Albrecht
authors: University of Rochester, Rochester, New York 14627, USA.
authors: D J
authors: DJ
authors: Ambrose
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: A
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authors: Amoroso
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Z
authors: JZ
authors: Bai
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
authors: R Baldini
authors: RB
authors: Ferroli
authors: Peking University, Beijing 100871, People's Republic of China.
authors: Y
authors: Y
authors: Ban
authors: Indiana University, Bloomington, Indiana 47405, USA.
authors: D W
authors: DW
authors: Bennett
authors: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
authors: J V
authors: JV
authors: Bennett
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
authors: M
authors: M
authors: Bertani
authors: INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
authors: D
authors: D
authors: Bettoni
authors: University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors: J M
authors: JM
authors: Bian
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: F
authors: F
authors: Bianchi
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: E
authors: E
authors: Boger
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: O
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authors: Bondarenko
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: I
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authors: Boyko
authors: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
authors: R A
authors: RA
authors: Briere
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: H
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authors: Cai
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X
authors: X
authors: Cai
authors: Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey.
authors: O
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authors: Cakir
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
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authors: Calcaterra
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: G F
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authors: Dogus University, 34722 Istanbul, Turkey.
authors: S A
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authors: Cetin
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J F
authors: JF
authors: Chang
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: G
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authors: Chelkov
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: G
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authors: Chen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H S
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authors: Chen
authors: Beihang University, Beijing 100191, People's Republic of China.
authors: H Y
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authors: Chen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: M L
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authors: Chen
authors: Nanjing University, Nanjing 210093, People's Republic of China.
authors: S J
authors: SJ
authors: Chen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X
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authors: Chen
authors: Lanzhou University, Lanzhou 730000, People's Republic of China.
authors: X R
authors: XR
authors: Chen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y B
authors: YB
authors: Chen
authors: Huangshan College, Huangshan 245000, People's Republic of China.
authors: H P
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authors: Cheng
authors: Peking University, Beijing 100871, People's Republic of China.
authors: X K
authors: XK
authors: Chu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y P
authors: YP
authors: Chu
authors: INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
authors: G
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authors: Cibinetto
authors: University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors: D
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authors: Cronin-Hennessy
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authors: H L
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authors: Dai
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Dai
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: D
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authors: Dedovich
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Deng
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: A
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authors: Denig
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: I
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authors: Denysenko
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: M
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authors: Destefanis
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: F
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authors: De Mori
authors: Liaoning University, Shenyang 110036, People's Republic of China.
authors: Y
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authors: Ding
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: C
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authors: Dong
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J
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authors: Dong
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L Y
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authors: Dong
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: M Y
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authors: Dong
authors: Zhengzhou University, Zhengzhou 450001, People's Republic of China.
authors: S X
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authors: Du
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: P F
authors: PF
authors: Duan
authors: Tsinghua University, Beijing 100084, People's Republic of China.
authors: J Z
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authors: Fan
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J
authors: J
authors: Fang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S S
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authors: Fang
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: X
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y
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authors: Fang
authors: University of Eastern Piedmont, I-15121 Alessandria, Italy.|INFN, I-10125 Turin, Italy.
authors: L
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authors: Fava
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: F
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authors: Feldbauer
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
authors: G
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authors: Felici
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: C Q
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authors: Feng
authors: INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Q
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authors: Gao
authors: Tsinghua University, Beijing 100084, People's Republic of China.
authors: Y
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authors: Gao
authors: INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
authors: I
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authors: Garzia
authors: GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
authors: K
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authors: Goetzen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
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authors: Gradl
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: GuangXi University, Nanning 530004, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: YH
authors: Guan
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
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authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y
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authors: Guo
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: Y P
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authors: Guo
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: Z
authors: Z
authors: Haddadi
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: A
authors: A
authors: Hafner
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: S
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authors: Han
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y L
authors: YL
authors: Han
authors: University of Hawaii, Honolulu, Hawaii 96822, USA.
authors: F A
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authors: Harris
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: K L
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authors: He
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: Z Y
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authors: Bochum Ruhr-University, D-44780 Bochum, Germany.
authors: T
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H M
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authors: University of Turin, I-10125 Turin, Italy.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: T
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y
authors: Y
authors: Hu
authors: Central China Normal University, Wuhan 430079, People's Republic of China.
authors: G M
authors: GM
authors: Huang
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: G S
authors: GS
authors: Huang
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: H P
authors: HP
authors: Huang
authors: Henan Normal University, Xinxiang 453007, People's Republic of China.
authors: J S
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authors: Huang
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: X T
authors: XT
authors: Huang
authors: Nanjing University, Nanjing 210093, People's Republic of China.
authors: Y
authors: Y
authors: Huang
authors: University of the Punjab, Lahore 54590, Pakistan.
authors: T
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authors: Hussain
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q
authors: Q
authors: Ji
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: Q P
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Ji
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Jiang
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: L W
authors: LW
authors: Jiang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X S
authors: XS
authors: Jiang
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: J B
authors: JB
authors: Jiao
authors: Huangshan College, Huangshan 245000, People's Republic of China.
authors: Z
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S
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authors: Jin
authors: Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
authors: T
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authors: Johansson
authors: University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors: A
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authors: Julin
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: N
authors: N
authors: Kalantar-Nayestanaki
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Kang
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: X S
authors: XS
authors: Kang
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: M
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authors: Kavatsyuk
authors: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
authors: B C
authors: BC
authors: Ke
authors: Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: R
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authors: Kliemt
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: B
authors: B
authors: Kloss
authors: Dogus University, 34722 Istanbul, Turkey.
authors: O B
authors: OB
authors: Kolcu
authors: Bochum Ruhr-University, D-44780 Bochum, Germany.
authors: B
authors: B
authors: Kopf
authors: University of Hawaii, Honolulu, Hawaii 96822, USA.
authors: M
authors: M
authors: Kornicer
authors: Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
authors: W
authors: W
authors: Kuehn
authors: Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
authors: A
authors: A
authors: Kupsc
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: W
authors: W
authors: Lai
authors: Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
authors: J S
authors: JS
authors: Lange
authors: Indiana University, Bloomington, Indiana 47405, USA.
authors: M
authors: M
authors: Lara
authors: Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: P
authors: P
authors: Larin
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Cheng
authors: C
authors: Li
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: C H
authors: CH
authors: Li
authors: Zhengzhou University, Zhengzhou 450001, People's Republic of China.
authors: D M
authors: DM
authors: Li
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: F
authors: F
authors: Li
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J C
authors: JC
authors: Li
authors: Seoul National University, Seoul 151-747, Korea.
authors: Jin
authors: J
authors: Li
authors: Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
authors: K
authors: K
authors: Li
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: K
authors: K
authors: Li
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: P R
authors: PR
authors: Li
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: T
authors: T
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: WG
authors: Li
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: X L
authors: XL
authors: Li
authors: GuangXi University, Nanning 530004, People's Republic of China.
authors: X M
authors: XM
authors: Li
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X N
authors: XN
authors: Li
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: X Q
authors: XQ
authors: Li
authors: Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
authors: Z B
authors: ZB
authors: Li
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: H
authors: H
authors: Liang
authors: Sichuan University, Chengdu 610064, People's Republic of China.
authors: Y F
authors: YF
authors: Liang
authors: Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
authors: Y T
authors: YT
authors: Liang
authors: Guangxi Normal University, Guilin 541004, People's Republic of China.
authors: G R
authors: GR
authors: Liao
authors: Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: D X
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: B J
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authors: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
authors: C L
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authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: Liu
authors: Shanxi University, Taiyuan 030006, People's Republic of China.
authors: F H
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authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Fang
authors: F
authors: Liu
authors: Central China Normal University, Wuhan 430079, People's Republic of China.
authors: Feng
authors: F
authors: Liu
authors: GuangXi University, Nanning 530004, People's Republic of China.
authors: H B
authors: HB
authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
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authors: HH
authors: Liu
authors: Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
authors: H H
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authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H M
authors: HM
authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J
authors: J
authors: Liu
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: J P
authors: JP
authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Y
authors: JY
authors: Liu
authors: Tsinghua University, Beijing 100084, People's Republic of China.
authors: K
authors: K
authors: Liu
authors: Liaoning University, Shenyang 110036, People's Republic of China.
authors: K Y
authors: KY
authors: Liu
authors: Peking University, Beijing 100871, People's Republic of China.
authors: L D
authors: LD
authors: Liu
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: Q
authors: Q
authors: Liu
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: S B
authors: SB
authors: Liu
authors: Lanzhou University, Lanzhou 730000, People's Republic of China.
authors: X
authors: X
authors: Liu
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: X X
authors: XX
authors: Liu
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: Y B
authors: YB
authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z A
authors: ZA
authors: Liu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Zhiqiang
authors: Z
authors: Liu
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: Zhiqing
authors: Z
authors: Liu
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: H
authors: H
authors: Loehner
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X C
authors: XC
authors: Lou
authors: Huangshan College, Huangshan 245000, People's Republic of China.
authors: H J
authors: HJ
authors: Lu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J G
authors: JG
authors: Lu
authors: Hunan University, Changsha 410082, People's Republic of China.
authors: R Q
authors: RQ
authors: Lu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y
authors: Y
authors: Lu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y P
authors: YP
authors: Lu
authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
authors: C L
authors: CL
authors: Luo
authors: Zhejiang University, Hangzhou 310027, People's Republic of China.
authors: M X
authors: MX
authors: Luo
authors: University of Hawaii, Honolulu, Hawaii 96822, USA.
authors: T
authors: T
authors: Luo
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X L
authors: XL
authors: Luo
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: M
authors: M
authors: Lv
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: X R
authors: XR
authors: Lyu
authors: Liaoning University, Shenyang 110036, People's Republic of China.
authors: F C
authors: FC
authors: Ma
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H L
authors: HL
authors: Ma
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: L L
authors: LL
authors: Ma
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q M
authors: QM
authors: Ma
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S
authors: S
authors: Ma
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: T
authors: T
authors: Ma
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: X N
authors: XN
authors: Ma
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X Y
authors: XY
authors: Ma
authors: Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: F E
authors: FE
authors: Maas
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: M
authors: M
authors: Maggiora
authors: University of the Punjab, Lahore 54590, Pakistan.
authors: Q A
authors: QA
authors: Malik
authors: Peking University, Beijing 100871, People's Republic of China.
authors: Y J
authors: YJ
authors: Mao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z P
authors: ZP
authors: Mao
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: S
authors: S
authors: Marcello
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: J G
authors: JG
authors: Messchendorp
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J
authors: J
authors: Min
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: T J
authors: TJ
authors: Min
authors: Indiana University, Bloomington, Indiana 47405, USA.
authors: R E
authors: RE
authors: Mitchell
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X H
authors: XH
authors: Mo
authors: Central China Normal University, Wuhan 430079, People's Republic of China.
authors: Y J
authors: YJ
authors: Mo
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: H
authors: H
authors: Moeini
authors: Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: C Morales
authors: CM
authors: Morales
authors: Indiana University, Bloomington, Indiana 47405, USA.
authors: K
authors: K
authors: Moriya
authors: G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
authors: N Yu
authors: NY
authors: Muchnoi
authors: University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors: H
authors: H
authors: Muramatsu
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: Y
authors: Y
authors: Nefedov
authors: Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: F
authors: F
authors: Nerling
authors: G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
authors: I B
authors: IB
authors: Nikolaev
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z
authors: Z
authors: Ning
authors: COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
authors: S
authors: S
authors: Nisar
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S L
authors: SL
authors: Niu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X Y
authors: XY
authors: Niu
authors: Seoul National University, Seoul 151-747, Korea.
authors: S L
authors: SL
authors: Olsen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q
authors: Q
authors: Ouyang
authors: INFN and University of Perugia, I-06100 Perugia, Italy.
authors: S
authors: S
authors: Pacetti
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
authors: P
authors: P
authors: Patteri
authors: Bochum Ruhr-University, D-44780 Bochum, Germany.
authors: M
authors: M
authors: Pelizaeus
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: H P
authors: HP
authors: Peng
authors: GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
authors: K
authors: K
authors: Peters
authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
authors: J L
authors: JL
authors: Ping
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: R G
authors: RG
authors: Ping
authors: University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors: R
authors: R
authors: Poling
authors: Hunan University, Changsha 410082, People's Republic of China.
authors: Y N
authors: YN
authors: Pu
authors: Nanjing University, Nanjing 210093, People's Republic of China.
authors: M
authors: M
authors: Qi
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S
authors: S
authors: Qian
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: C F
authors: CF
authors: Qiao
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: L Q
authors: LQ
authors: Qin
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: N
authors: N
authors: Qin
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X S
authors: XS
authors: Qin
authors: Peking University, Beijing 100871, People's Republic of China.
authors: Y
authors: Y
authors: Qin
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z H
authors: ZH
authors: Qin
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J F
authors: JF
authors: Qiu
authors: University of the Punjab, Lahore 54590, Pakistan.
authors: K H
authors: KH
authors: Rashid
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: C F
authors: CF
authors: Redmer
authors: Hunan University, Changsha 410082, People's Republic of China.
authors: H L
authors: HL
authors: Ren
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: M
authors: M
authors: Ripka
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: G
authors: G
authors: Rong
authors: GuangXi University, Nanning 530004, People's Republic of China.
authors: X D
authors: XD
authors: Ruan
authors: INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
authors: V
authors: V
authors: Santoro
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: A
authors: A
authors: Sarantsev
authors: University of Ferrara, I-44122 Ferrara, Italy.
authors: M
authors: M
authors: Savrié
authors: Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
authors: K
authors: K
authors: Schoenning
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: S
authors: S
authors: Schumann
authors: Peking University, Beijing 100871, People's Republic of China.
authors: W
authors: W
authors: Shan
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: M
authors: M
authors: Shao
authors: Beihang University, Beijing 100191, People's Republic of China.
authors: C P
authors: CP
authors: Shen
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: P X
authors: PX
authors: Shen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X Y
authors: XY
authors: Shen
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H Y
authors: HY
authors: Sheng
authors: Indiana University, Bloomington, Indiana 47405, USA.
authors: M R
authors: MR
authors: Shepherd
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: W M
authors: WM
authors: Song
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X Y
authors: XY
authors: Song
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: S
authors: S
authors: Sosio
authors: University of Turin, I-10125 Turin, Italy.|INFN, I-10125 Turin, Italy.
authors: S
authors: S
authors: Spataro
authors: Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
authors: B
authors: B
authors: Spruck
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: G X
authors: GX
authors: Sun
authors: Henan Normal University, Xinxiang 453007, People's Republic of China.
authors: J F
authors: JF
authors: Sun
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S S
authors: SS
authors: Sun
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Y J
authors: YJ
authors: Sun
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y Z
authors: YZ
authors: Sun
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z J
authors: ZJ
authors: Sun
authors: Indiana University, Bloomington, Indiana 47405, USA.
authors: Z T
authors: ZT
authors: Sun
authors: Sichuan University, Chengdu 610064, People's Republic of China.
authors: C J
authors: CJ
authors: Tang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X
authors: X
authors: Tang
authors: Uludag University, 16059 Bursa, Turkey.
authors: I
authors: I
authors: Tapan
authors: University of Rochester, Rochester, New York 14627, USA.
authors: E H
authors: EH
authors: Thorndike
authors: KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
authors: M
authors: M
authors: Tiemens
authors: University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors: D
authors: D
authors: Toth
authors: Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
authors: M
authors: M
authors: Ullrich
authors: Dogus University, 34722 Istanbul, Turkey.
authors: I
authors: I
authors: Uman
authors: University of Hawaii, Honolulu, Hawaii 96822, USA.
authors: G S
authors: GS
authors: Varner
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: B
authors: B
authors: Wang
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: B L
authors: BL
authors: Wang
authors: Peking University, Beijing 100871, People's Republic of China.
authors: D
authors: D
authors: Wang
authors: Peking University, Beijing 100871, People's Republic of China.
authors: D Y
authors: DY
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: K
authors: K
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L L
authors: LL
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L S
authors: LS
authors: Wang
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: M
authors: M
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: P
authors: P
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: P L
authors: PL
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q J
authors: QJ
authors: Wang
authors: Peking University, Beijing 100871, People's Republic of China.
authors: S G
authors: SG
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: W
authors: W
authors: Wang
authors: Tsinghua University, Beijing 100084, People's Republic of China.
authors: X F
authors: XF
authors: Wang
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
authors: Y D
authors: YD
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y F
authors: YF
authors: Wang
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: Y Q
authors: YQ
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z
authors: Z
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z G
authors: ZG
authors: Wang
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Z H
authors: ZH
authors: Wang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z Y
authors: ZY
authors: Wang
authors: Guangxi Normal University, Guilin 541004, People's Republic of China.
authors: D H
authors: DH
authors: Wei
authors: Peking University, Beijing 100871, People's Republic of China.
authors: J B
authors: JB
authors: Wei
authors: Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
authors: P
authors: P
authors: Weidenkaff
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S P
authors: SP
authors: Wen
authors: Bochum Ruhr-University, D-44780 Bochum, Germany.
authors: U
authors: U
authors: Wiedner
authors: Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
authors: M
authors: M
authors: Wolke
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L H
authors: LH
authors: Wu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z
authors: Z
authors: Wu
authors: Tsinghua University, Beijing 100084, People's Republic of China.
authors: L G
authors: LG
authors: Xia
authors: Hunan University, Changsha 410082, People's Republic of China.
authors: Y
authors: Y
authors: Xia
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: D
authors: D
authors: Xiao
authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
authors: Z J
authors: ZJ
authors: Xiao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y G
authors: YG
authors: Xie
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q L
authors: QL
authors: Xiu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: G F
authors: GF
authors: Xu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L
authors: L
authors: Xu
authors: Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
authors: Q J
authors: QJ
authors: Xu
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: Q N
authors: QN
authors: Xu
authors: Soochow University, Suzhou 215006, People's Republic of China.
authors: X P
authors: XP
authors: Xu
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: L
authors: L
authors: Yan
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: W B
authors: WB
authors: Yan
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: W C
authors: WC
authors: Yan
authors: Hunan University, Changsha 410082, People's Republic of China.
authors: Y H
authors: YH
authors: Yan
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H X
authors: HX
authors: Yang
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: L
authors: L
authors: Yang
authors: Central China Normal University, Wuhan 430079, People's Republic of China.
authors: Y
authors: Y
authors: Yang
authors: Guangxi Normal University, Guilin 541004, People's Republic of China.
authors: Y X
authors: YX
authors: Yang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H
authors: H
authors: Ye
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: M
authors: M
authors: Ye
authors: China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
authors: M H
authors: MH
authors: Ye
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J H
authors: JH
authors: Yin
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: B X
authors: BX
authors: Yu
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: C X
authors: CX
authors: Yu
authors: Peking University, Beijing 100871, People's Republic of China.
authors: H W
authors: HW
authors: Yu
authors: Lanzhou University, Lanzhou 730000, People's Republic of China.
authors: J S
authors: JS
authors: Yu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: C Z
authors: CZ
authors: Yuan
authors: Nanjing University, Nanjing 210093, People's Republic of China.
authors: W L
authors: WL
authors: Yuan
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y
authors: Y
authors: Yuan
authors: Dogus University, 34722 Istanbul, Turkey.
authors: A
authors: A
authors: Yuncu
authors: University of the Punjab, Lahore 54590, Pakistan.
authors: A A
authors: AA
authors: Zafar
authors: INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
authors: A
authors: A
authors: Zallo
authors: Hunan University, Changsha 410082, People's Republic of China.
authors: Y
authors: Y
authors: Zeng
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: B X
authors: BX
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: B Y
authors: BY
authors: Zhang
authors: Nanjing University, Nanjing 210093, People's Republic of China.
authors: C
authors: C
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: C C
authors: CC
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: D H
authors: DH
authors: Zhang
authors: Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
authors: H H
authors: HH
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: H Y
authors: HY
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J J
authors: JJ
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J L
authors: JL
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Q
authors: JQ
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J W
authors: JW
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Y
authors: JY
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Z
authors: JZ
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: K
authors: K
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L
authors: L
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S H
authors: SH
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X J
authors: XJ
authors: Zhang
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: X Y
authors: XY
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y
authors: Y
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y H
authors: YH
authors: Zhang
authors: Central China Normal University, Wuhan 430079, People's Republic of China.
authors: Z H
authors: ZH
authors: Zhang
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Z P
authors: ZP
authors: Zhang
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: Z Y
authors: ZY
authors: Zhang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: G
authors: G
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J W
authors: JW
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Y
authors: JY
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J Z
authors: JZ
authors: Zhao
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Lei
authors: L
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Ling
authors: L
authors: Zhao
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: M G
authors: MG
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q
authors: Q
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Q W
authors: QW
authors: Zhao
authors: Zhengzhou University, Zhengzhou 450001, People's Republic of China.
authors: S J
authors: SJ
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: T C
authors: TC
authors: Zhao
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y B
authors: YB
authors: Zhao
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Z G
authors: ZG
authors: Zhao
authors: Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
authors: A
authors: A
authors: Zhemchugov
authors: University of South China, Hengyang 421001, People's Republic of China.
authors: B
authors: B
authors: Zheng
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J P
authors: JP
authors: Zheng
authors: Shandong University, Jinan 250100, People's Republic of China.
authors: W J
authors: WJ
authors: Zheng
authors: University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors: Y H
authors: YH
authors: Zheng
authors: Nanjing Normal University, Nanjing 210023, People's Republic of China.
authors: B
authors: B
authors: Zhong
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: L
authors: L
authors: Zhou
authors: Nankai University, Tianjin 300071, People's Republic of China.
authors: Li
authors: L
authors: Zhou
authors: Wuhan University, Wuhan 430072, People's Republic of China.
authors: X
authors: X
authors: Zhou
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: X K
authors: XK
authors: Zhou
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: X R
authors: XR
authors: Zhou
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: X Y
authors: XY
authors: Zhou
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: K
authors: K
authors: Zhu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: K J
authors: KJ
authors: Zhu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: S
authors: S
authors: Zhu
authors: Tsinghua University, Beijing 100084, People's Republic of China.
authors: X L
authors: XL
authors: Zhu
authors: University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors: Y C
authors: YC
authors: Zhu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Y S
authors: YS
authors: Zhu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: Z A
authors: ZA
authors: Zhu
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J
authors: J
authors: Zhuang
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: B S
authors: BS
authors: Zou
authors: Institute of High Energy Physics, Beijing 100049, People's Republic of China.
authors: J H
authors: JH
authors: Zou