Observation of a charged charmoniumlike structure Zc(4020) and search for the Zc(3900) in e+e-→π+π-hc.
We study e+e-→π+π-hc at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies and are found to be of the same order of magnitude as those of e+e-→π+π-J/ψ but with a different line shape. In the π±hc mass spectrum, a distinct structure, referred to as Zc(4020), is observed at 4.02  GeV/c2. The Zc(4020) carries an electric charge and couples to charmonium. A fit to the π±hc invariant mass spectrum, neglecting possible interferences, results in a mass of (4022.9±0.8±2.7)  MeV/c2 and a width of (7.9±2.7±2.6)  MeV for the Zc(4020), where the first errors are statistical and the second systematic. The difference between the parameters of this structure and the Zc(4025) observed in the D*D[over ¯]* final state is within 1.5σ, but whether they are the same state needs further investigation. No significant Zc(3900) signal is observed, and upper limits on the Zc(3900) production cross sections in π±hc at center-of-mass energies of 4.23 and 4.26 GeV are set.
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M
M
Ablikim
G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
M N
MN
Achasov
Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
O
O
Albayrak
University of Rochester, Rochester, New York 14627, USA.
D J
DJ
Ambrose
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
F F
FF
An
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Q
Q
An
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J Z
JZ
Bai
INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
R
R
Baldini Ferroli
Peking University, Beijing 100871, People's Republic of China.
Y
Y
Ban
Bochum Ruhr-University, D-44780 Bochum, Germany.
J
J
Becker
Indiana University, Bloomington, Indiana 47405, USA.
J V
JV
Bennett
INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
M
M
Bertani
University of Minnesota, Minneapolis, Minnesota 55455, USA.
J M
JM
Bian
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
E
E
Boger
KVI, University of Groningen, NL-9747 AA Groningen, Netherlands.
O
O
Bondarenko
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
I
I
Boyko
Universitaet Giessen, D-35392 Giessen, Germany.
S
S
Braun
Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
R A
RA
Briere
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
V
V
Bytev
Wuhan University, Wuhan 430072, People's Republic of China.
H
H
Cai
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X
X
Cai
Ankara University, Dogol Caddesi, 06100 Tandogan, Ankara, Turkey.
O
O
Cakir
INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
A
A
Calcaterra
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G F
GF
Cao
Dogus University, 34722 Istanbul, Turkey.
S A
SA
Cetin
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J F
JF
Chang
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
G
G
Chelkov
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G
G
Chen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H S
HS
Chen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J C
JC
Chen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M L
ML
Chen
Nanjing University, Nanjing 210093, People's Republic of China.
S J
SJ
Chen
Lanzhou University, Lanzhou 730000, People's Republic of China.
X R
XR
Chen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y B
YB
Chen
Huangshan College, Huangshan 245000, People's Republic of China.
H P
HP
Cheng
Peking University, Beijing 100871, People's Republic of China.
X K
XK
Chu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y P
YP
Chu
University of Minnesota, Minneapolis, Minnesota 55455, USA.
D
D
Cronin-Hennessy
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H L
HL
Dai
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J P
JP
Dai
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
D
D
Dedovich
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z Y
ZY
Deng
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
A
A
Denig
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
I
I
Denysenko
University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy.
M
M
Destefanis
Shandong University, Jinan 250100, People's Republic of China.
W M
WM
Ding
Liaoning University, Shenyang 110036, People's Republic of China.
Y
Y
Ding
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L Y
LY
Dong
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M Y
MY
Dong
Zhengzhou University, Zhengzhou 450001, People's Republic of China.
S X
SX
Du
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J
J
Fang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S S
SS
Fang
University of Eastern Piedmont, I-15121 Alessandria, Italy and INFN, I-10125, Turin, Italy.
L
L
Fava
University of Science and Technology of China, Hefei 230026, People's Republic of China.
C Q
CQ
Feng
Bochum Ruhr-University, D-44780 Bochum, Germany.
P
P
Friedel
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
C D
CD
Fu
Nanjing University, Nanjing 210093, People's Republic of China.
J L
JL
Fu
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
O
O
Fuks
Tsinghua University, Beijing 100084, People's Republic of China.
Y
Y
Gao
University of Science and Technology of China, Hefei 230026, People's Republic of China.
C
C
Geng
GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
K
K
Goetzen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
W X
WX
Gong
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
W
W
Gradl
University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy.
M
M
Greco
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M H
MH
Gu
GuangXi University, Nanning 530004, People's Republic of China.
Y T
YT
Gu
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Y H
YH
Guan
Nankai University, Tianjin 300071, People's Republic of China.
A Q
AQ
Guo
Nanjing Normal University, Nanjing 210023, People's Republic of China.
L B
LB
Guo
Nanjing Normal University, Nanjing 210023, People's Republic of China.
T
T
Guo
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany and Nankai University, Tianjin 300071, People's Republic of China.
Y P
YP
Guo
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y L
YL
Han
University of Hawaii, Honolulu, Hawaii 96822, USA.
F A
FA
Harris
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
K L
KL
He
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M
M
He
Nankai University, Tianjin 300071, People's Republic of China.
Z Y
ZY
He
Bochum Ruhr-University, D-44780 Bochum, Germany.
T
T
Held
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y K
YK
Heng
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z L
ZL
Hou
Nanjing Normal University, Nanjing 210023, People's Republic of China.
C
C
Hu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H M
HM
Hu
Universitaet Giessen, D-35392 Giessen, Germany.
J F
JF
Hu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
T
T
Hu
Central China Normal University, Wuhan 430079, People's Republic of China.
G M
GM
Huang
University of Science and Technology of China, Hefei 230026, People's Republic of China.
G S
GS
Huang
Henan Normal University, Xinxiang 453007, People's Republic of China.
J S
JS
Huang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L
L
Huang
Shandong University, Jinan 250100, People's Republic of China.
X T
XT
Huang
Nanjing University, Nanjing 210093, People's Republic of China.
Y
Y
Huang
University of the Punjab, Lahore-54590, Pakistan.
T
T
Hussain
University of Science and Technology of China, Hefei 230026, People's Republic of China.
C S
CS
Ji
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q
Q
Ji
Nankai University, Tianjin 300071, People's Republic of China.
Q P
QP
Ji
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X B
XB
Ji
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X L
XL
Ji
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L L
LL
Jiang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X S
XS
Jiang
Shandong University, Jinan 250100, People's Republic of China.
J B
JB
Jiao
Huangshan College, Huangshan 245000, People's Republic of China.
Z
Z
Jiao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
D P
DP
Jin
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S
S
Jin
Tsinghua University, Beijing 100084, People's Republic of China.
F F
FF
Jing
KVI, University of Groningen, NL-9747 AA Groningen, Netherlands.
N
N
Kalantar-Nayestanaki
KVI, University of Groningen, NL-9747 AA Groningen, Netherlands.
M
M
Kavatsyuk
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
B
B
Kloss
Bochum Ruhr-University, D-44780 Bochum, Germany.
B
B
Kopf
University of Hawaii, Honolulu, Hawaii 96822, USA.
M
M
Kornicer
Universitaet Giessen, D-35392 Giessen, Germany.
W
W
Kuehn
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
W
W
Lai
Universitaet Giessen, D-35392 Giessen, Germany.
J S
JS
Lange
Indiana University, Bloomington, Indiana 47405, USA.
M
M
Lara
Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
P
P
Larin
Bochum Ruhr-University, D-44780 Bochum, Germany.
M
M
Leyhe
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
C H
CH
Li
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Cheng
C
Li
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Cui
C
Li
Hunan University, Changsha 410082, People's Republic of China.
D L
DL
Li
Zhengzhou University, Zhengzhou 450001, People's Republic of China.
D M
DM
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
F
F
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G
G
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H B
HB
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J C
JC
Li
Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
K
K
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Lei
L
Li
GuangXi University, Nanning 530004, People's Republic of China.
N
N
Li
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
P R
PR
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q J
QJ
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
W D
WD
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
W G
WG
Li
Shandong University, Jinan 250100, People's Republic of China.
X L
XL
Li
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X N
XN
Li
Nankai University, Tianjin 300071, People's Republic of China.
X Q
XQ
Li
Seoul National University, Seoul, 151-747 Korea.
X R
XR
Li
Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
Z B
ZB
Li
University of Science and Technology of China, Hefei 230026, People's Republic of China.
H
H
Liang
Sichuan University, Chengdu 610064, People's Republic of China.
Y F
YF
Liang
Universitaet Giessen, D-35392 Giessen, Germany.
Y T
YT
Liang
Tsinghua University, Beijing 100084, People's Republic of China.
G R
GR
Liao
Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
D X
DX
Lin
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
B J
BJ
Liu
Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
C L
CL
Liu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
C X
CX
Liu
Shanxi University, Taiyuan 030006, People's Republic of China.
F H
FH
Liu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Fang
F
Liu
Central China Normal University, Wuhan 430079, People's Republic of China.
Feng
F
Liu
GuangXi University, Nanning 530004, People's Republic of China.
H B
HB
Liu
Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
H H
HH
Liu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H M
HM
Liu
Wuhan University, Wuhan 430072, People's Republic of China.
J P
JP
Liu
Tsinghua University, Beijing 100084, People's Republic of China.
K
K
Liu
Liaoning University, Shenyang 110036, People's Republic of China.
K Y
KY
Liu
Shandong University, Jinan 250100, People's Republic of China.
P L
PL
Liu
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Q
Q
Liu
University of Science and Technology of China, Hefei 230026, People's Republic of China.
S B
SB
Liu
Lanzhou University, Lanzhou 730000, People's Republic of China.
X
X
Liu
Nankai University, Tianjin 300071, People's Republic of China.
Y B
YB
Liu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z A
ZA
Liu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Zhiqiang
Z
Liu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Zhiqing
Z
Liu
KVI, University of Groningen, NL-9747 AA Groningen, Netherlands.
H
H
Loehner
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X C
XC
Lou
Henan Normal University, Xinxiang 453007, People's Republic of China.
G R
GR
Lu
Huangshan College, Huangshan 245000, People's Republic of China.
H J
HJ
Lu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J G
JG
Lu
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
X R
XR
Lu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y P
YP
Lu
Nanjing Normal University, Nanjing 210023, People's Republic of China.
C L
CL
Luo
Zhejiang University, Hangzhou 310027, People's Republic of China.
M X
MX
Luo
University of Hawaii, Honolulu, Hawaii 96822, USA.
T
T
Luo
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X L
XL
Luo
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M
M
Lv
Liaoning University, Shenyang 110036, People's Republic of China.
F C
FC
Ma
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H L
HL
Ma
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q M
QM
Ma
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S
S
Ma
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
T
T
Ma
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X Y
XY
Ma
Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
F E
FE
Maas
University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy.
M
M
Maggiora
University of the Punjab, Lahore-54590, Pakistan.
Q A
QA
Malik
Peking University, Beijing 100871, People's Republic of China.
Y J
YJ
Mao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z P
ZP
Mao
KVI, University of Groningen, NL-9747 AA Groningen, Netherlands.
J G
JG
Messchendorp
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J
J
Min
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
T J
TJ
Min
Indiana University, Bloomington, Indiana 47405, USA.
R E
RE
Mitchell
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X H
XH
Mo
KVI, University of Groningen, NL-9747 AA Groningen, Netherlands.
H
H
Moeini
Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
C
C
Morales Morales
Indiana University, Bloomington, Indiana 47405, USA.
K
K
Moriya
G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
N Yu
NY
Muchnoi
University of Rochester, Rochester, New York 14627, USA.
H
H
Muramatsu
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
Y
Y
Nefedov
G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
I B
IB
Nikolaev
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z
Z
Ning
COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
S
S
Nisar
Seoul National University, Seoul, 151-747 Korea.
S L
SL
Olsen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q
Q
Ouyang
INFN and University of Perugia, I-06100, Perugia, Italy.
S
S
Pacetti
University of Hawaii, Honolulu, Hawaii 96822, USA.
J W
JW
Park
Bochum Ruhr-University, D-44780 Bochum, Germany.
M
M
Pelizaeus
University of Science and Technology of China, Hefei 230026, People's Republic of China.
H P
HP
Peng
GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
K
K
Peters
Nanjing Normal University, Nanjing 210023, People's Republic of China.
J L
JL
Ping
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
R G
RG
Ping
University of Minnesota, Minneapolis, Minnesota 55455, USA.
R
R
Poling
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
E
E
Prencipe
Nanjing University, Nanjing 210093, People's Republic of China.
M
M
Qi
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S
S
Qian
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
C F
CF
Qiao
Shandong University, Jinan 250100, People's Republic of China.
L Q
LQ
Qin
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X S
XS
Qin
Peking University, Beijing 100871, People's Republic of China.
Y
Y
Qin
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z H
ZH
Qin
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J F
JF
Qiu
University of the Punjab, Lahore-54590, Pakistan.
K H
KH
Rashid
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
C F
CF
Redmer
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
M
M
Ripka
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G
G
Rong
GuangXi University, Nanning 530004, People's Republic of China.
X D
XD
Ruan
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
A
A
Sarantsev
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
S
S
Schumann
Peking University, Beijing 100871, People's Republic of China.
W
W
Shan
University of Science and Technology of China, Hefei 230026, People's Republic of China.
M
M
Shao
Beihang University, Beijing 100191, People's Republic of China.
C P
CP
Shen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X Y
XY
Shen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H Y
HY
Sheng
Indiana University, Bloomington, Indiana 47405, USA.
M R
MR
Shepherd
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
W M
WM
Song
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X Y
XY
Song
University of Turin, I-10125, Turin, Italy and INFN, I-10125, Turin, Italy.
S
S
Spataro
Universitaet Giessen, D-35392 Giessen, Germany.
B
B
Spruck
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G X
GX
Sun
Henan Normal University, Xinxiang 453007, People's Republic of China.
J F
JF
Sun
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S S
SS
Sun
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Y J
YJ
Sun
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y Z
YZ
Sun
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z J
ZJ
Sun
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Z T
ZT
Sun
Sichuan University, Chengdu 610064, People's Republic of China.
C J
CJ
Tang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X
X
Tang
Uludag University, 16059 Bursa, Turkey.
I
I
Tapan
University of Rochester, Rochester, New York 14627, USA.
E H
EH
Thorndike
University of Minnesota, Minneapolis, Minnesota 55455, USA.
D
D
Toth
Universitaet Giessen, D-35392 Giessen, Germany.
M
M
Ullrich
Dogus University, 34722 Istanbul, Turkey.
I
I
Uman
University of Hawaii, Honolulu, Hawaii 96822, USA.
G S
GS
Varner
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
B
B
Wang
Peking University, Beijing 100871, People's Republic of China.
D
D
Wang
Peking University, Beijing 100871, People's Republic of China.
D Y
DY
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
K
K
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L L
LL
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L S
LS
Wang
Shandong University, Jinan 250100, People's Republic of China.
M
M
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
P
P
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
P L
PL
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q J
QJ
Wang
Peking University, Beijing 100871, People's Republic of China.
S G
SG
Wang
Tsinghua University, Beijing 100084, People's Republic of China.
X F
XF
Wang
University of Science and Technology of China, Hefei 230026, People's Republic of China.
X L
XL
Wang
INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
Y D
YD
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y F
YF
Wang
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
Y Q
YQ
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z
Z
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z G
ZG
Wang
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Z H
ZH
Wang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z Y
ZY
Wang
Guangxi Normal University, Guilin 541004, People's Republic of China.
D H
DH
Wei
Peking University, Beijing 100871, People's Republic of China.
J B
JB
Wei
Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
P
P
Weidenkaff
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Q G
QG
Wen
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S P
SP
Wen
Universitaet Giessen, D-35392 Giessen, Germany.
M
M
Werner
Bochum Ruhr-University, D-44780 Bochum, Germany.
U
U
Wiedner
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L H
LH
Wu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
N
N
Wu
University of Science and Technology of China, Hefei 230026, People's Republic of China.
S X
SX
Wu
Nankai University, Tianjin 300071, People's Republic of China.
W
W
Wu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z
Z
Wu
Tsinghua University, Beijing 100084, People's Republic of China.
L G
LG
Xia
Hunan University, Changsha 410082, People's Republic of China.
Y X
YX
Xia
Nanjing Normal University, Nanjing 210023, People's Republic of China.
Z J
ZJ
Xiao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y G
YG
Xie
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q L
QL
Xiu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G F
GF
Xu
Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
Q J
QJ
Xu
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Q N
QN
Xu
Soochow University, Suzhou 215006, People's Republic of China.
X P
XP
Xu
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Z R
ZR
Xu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z
Z
Xue
University of Science and Technology of China, Hefei 230026, People's Republic of China.
L
L
Yan
University of Science and Technology of China, Hefei 230026, People's Republic of China.
W B
WB
Yan
University of Science and Technology of China, Hefei 230026, People's Republic of China.
W C
WC
Yan
Hunan University, Changsha 410082, People's Republic of China.
Y H
YH
Yan
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H X
HX
Yang
Central China Normal University, Wuhan 430079, People's Republic of China.
Y
Y
Yang
Guangxi Normal University, Guilin 541004, People's Republic of China.
Y X
YX
Yang
GuangXi University, Nanning 530004, People's Republic of China.
Y Z
YZ
Yang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H
H
Ye
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
M
M
Ye
China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
M H
MH
Ye
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
B X
BX
Yu
Nankai University, Tianjin 300071, People's Republic of China.
C X
CX
Yu
Peking University, Beijing 100871, People's Republic of China.
H W
HW
Yu
Lanzhou University, Lanzhou 730000, People's Republic of China.
J S
JS
Yu
Shandong University, Jinan 250100, People's Republic of China.
S P
SP
Yu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
C Z
CZ
Yuan
Nanjing University, Nanjing 210093, People's Republic of China.
W L
WL
Yuan
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y
Y
Yuan
University of the Punjab, Lahore-54590, Pakistan.
A A
AA
Zafar
INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy.
A
A
Zallo
Nanjing University, Nanjing 210093, People's Republic of China.
S L
SL
Zang
Hunan University, Changsha 410082, People's Republic of China.
Y
Y
Zeng
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
B X
BX
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
B Y
BY
Zhang
Nanjing University, Nanjing 210093, People's Republic of China.
C
C
Zhang
Hunan University, Changsha 410082, People's Republic of China.
C B
CB
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
C C
CC
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
D H
DH
Zhang
Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
H H
HH
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
H Y
HY
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J Q
JQ
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J W
JW
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J Y
JY
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J Z
JZ
Zhang
Hunan University, Changsha 410082, People's Republic of China.
LiLi
L
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
S H
SH
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
X J
XJ
Zhang
Shandong University, Jinan 250100, People's Republic of China.
X Y
XY
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y
Y
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y H
YH
Zhang
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Z P
ZP
Zhang
Wuhan University, Wuhan 430072, People's Republic of China.
Z Y
ZY
Zhang
Central China Normal University, Wuhan 430079, People's Republic of China.
Zhenghao
Z
Zhang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G
G
Zhao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J W
JW
Zhao
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Lei
L
Zhao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Ling
L
Zhao
Nankai University, Tianjin 300071, People's Republic of China.
M G
MG
Zhao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Q
Q
Zhao
Zhengzhou University, Zhengzhou 450001, People's Republic of China.
S J
SJ
Zhao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
T C
TC
Zhao
Nanjing University, Nanjing 210093, People's Republic of China.
X H
XH
Zhao
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y B
YB
Zhao
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Z G
ZG
Zhao
Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
A
A
Zhemchugov
University of South China, Hengyang 421001, People's Republic of China.
B
B
Zheng
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J P
JP
Zheng
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Y H
YH
Zheng
Nanjing Normal University, Nanjing 210023, People's Republic of China.
B
B
Zhong
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
L
L
Zhou
Wuhan University, Wuhan 430072, People's Republic of China.
X
X
Zhou
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
X K
XK
Zhou
University of Science and Technology of China, Hefei 230026, People's Republic of China.
X R
XR
Zhou
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
K
K
Zhu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
K J
KJ
Zhu
Tsinghua University, Beijing 100084, People's Republic of China.
X L
XL
Zhu
University of Science and Technology of China, Hefei 230026, People's Republic of China.
Y C
YC
Zhu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Y S
YS
Zhu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Z A
ZA
Zhu
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J
J
Zhuang
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
B S
BS
Zou
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
J H
JH
Zou