Spin-parity analysis of pp¯ mass threshold structure in J/ψ and ψ(3686) radiative decays

Spin-parity analysis of pp¯ mass threshold structure in J/ψ and ψ(3686) radiative decays

A partial wave analysis of the pp¯ mass-threshold enhancement in the reaction J/ψ→γpp¯ is used to determine its J(PC) quantum numbers to be 0(-+), its peak mass to be below threshold at M=1832(-5)(+19)(stat)(-17)(+18)(syst)±19(model) MeV/c(2), and its total width to be Γ

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Veröffentlicht in:Physical review letters 2012-03, Vol.108 (11), p.112003-112003
Hauptverfasser: Ablikim, M, Achasov, M N, Alberto, D, Ambrose, D J, An, F F, An, Q, An, Z H, Bai, J Z, Baldini Ferroli, R B F, Ban, Y, Becker, J, Berger, N, Bertani, M B, Bian, J M, Boger, E, Bondarenko, O, Boyko, I, Briere, R A, Bytev, V, Cai, X, Calcaterra, A C, Cao, G F, Chang, J F, Chelkov, G, Chen, G, Chen, H S, Chen, J C, Chen, M L, Chen, S J, Chen, Y, Chen, Y B, Cheng, H P, Chu, Y P, Cronin-Hennessy, D, Dai, H L, Dai, J P, Dedovich, D, Deng, Z Y, Denysenko, I, Destefanis, M, Ding Ding, W L, Ding, Y, Dong, L Y, Dong, M Y, Du, S X, Fang, J, Fang, S S, Feng, C Q, Fu, C D, Fu, J L, Gao, Y, Geng, C, Goetzen, K, Gong, W X, Greco, M, Gu, M H, Gu, Y T, Guan, Y H, Guo, A Q, Guo, L B, Guo, Y P, Han, Y L, Hao, X Q, Harris, F A, He, K L, He, M, He, Z Y, Heng, Y K, Hou, Z L, Hu, H M, Hu, J F, Hu, T, Huang, B, Huang, G M, Huang, J S, Huang, X T, Huang, Y P, Hussain, T, Ji, C S, Ji, Q, Ji, X B, Ji, X L, Jia, L K, Jiang, L L, Jiang, X S, Jiao, J B, Jiao, Z, Jin, D P, Jin, S, Jing, F F, Kalantar-Nayestanaki, N, Kavatsyuk, M, Kuehn, W, Lai, W, Lange, J S, Leung, J K C, Li, C H, Li, Cheng, Li, Cui, Li, D M
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Sprache:eng
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Zusammenfassung:A partial wave analysis of the pp¯ mass-threshold enhancement in the reaction J/ψ→γpp¯ is used to determine its J(PC) quantum numbers to be 0(-+), its peak mass to be below threshold at M=1832(-5)(+19)(stat)(-17)(+18)(syst)±19(model) MeV/c(2), and its total width to be Γ
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.108.112003