Evidence for a new resonance and search for the Y(4140) in the gammagamma-->phiJ/psi process.
The process gammagamma-->phiJ/psi is measured using a data sample of 825 fb{-1} collected with the Belle detector. A narrow peak of 8.8{-3.2}{+4.2} events, with a significance of 3.2 standard deviations including systematic uncertainty, is observed. The mass and natural width of the structure [named X(4350)] are measured to be [4350.6{-5.1}{+4.6}(stat)+/-0.7(syst)] MeV/c{2} and [13{-9}{+18}(stat)+/-4(syst)] MeV, respectively. The product of its two-photon decay width and branching fraction to phiJ/psi is [6.7{-2.4}{+3.2}(stat)+/-1.1(syst)] eV for J{P}=0{+}, or [1.5{-0.6}{+0.7}(stat)+/-0.3(syst)] eV for J{P}=2{+}. No signal for the Y(4140)-->phiJ/psi structure reported by the CDF Collaboration in B-->K{+}phiJ/psi decays is observed, and limits of Gamma_{gammagamma}(Y(4140))B(Y(4140)-->phiJ/psi)<41 eV for J{P}=0;{+} or <6.0 eV for J{P}=2{+} are determined at the 90% C.L. This disfavors the scenario in which the Y(4140) is a D{s}{*+}D{s}{*-} molecule.
Shen
C P
CP
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing.
Yuan
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Aihara
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Arinstein
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Aushev
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Bakich
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Balagura
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Barberio
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Bay
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Belous
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Bhardwaj
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Bischofberger
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Bracko
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Browder
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Chang
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Chang
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Chen
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Chen
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Cheon
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Chiang
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Choi
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Dalseno
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Das
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Dolezal
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Drutskoy
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Eidelman
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Epifanov
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Gabyshev
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Golob
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Ha
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Haba
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Han
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Hayasaka
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Hayashii
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Horii
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Hoshi
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Hou
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Hsiung
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Hyun
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Inami
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Itoh
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Iwabuchi
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Iwasaki
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Iwasaki
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Joshi
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Julius
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Kang
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Kawasaki
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Kiesling
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Kim
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Kim
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Krizan
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Krokovny
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Kwon
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Kyeong
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Lange
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Lee
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Lee
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Li
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Liu
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Liu
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Liventsev
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Louvot
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Matyja
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McOnie
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Miyabayashi
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Miyata
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Miyazaki
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Mori
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Mussa
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Nakano
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Nakao
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Nakazawa
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Natkaniec
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Neubauer
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Nishida
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Nishimura
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Nitoh
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Ohshima
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Okuno
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Olsen
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Pakhlova
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Park
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Park
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Petric
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Röhrken
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Ryu
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Sahoo
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Sakai
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Schneider
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Senyo
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Sevior
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Shapkin
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Shiu
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Shwartz
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Singh
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Sokolov
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Solovieva
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Staric
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Teramoto
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Trabelsi
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Uehara
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Uglov
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Uno
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Urquijo
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Varner
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Vervink
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Wang
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Wang
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Wang
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Watanabe
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Wedd
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Won
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Yamashita
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Zhang
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Zhang
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Zivko
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Zyukova
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