학술논문
Study of J/ψ→pp¯ϕ at BESIII
Document Type
article
Author
Ablikim, M; Achasov, MN; Ai, XC; Albayrak, O; Albrecht, M; Ambrose, DJ; Amoroso, A; An, FF; An, Q; Bai, JZ; Ferroli, R Baldini; Ban, Y; Bennett, DW; Bennett, JV; Bertani, M; Bettoni, D; Bian, JM; Bianchi, F; Boger, E; Boyko, I; Briere, RA; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, GF; Cetin, SA; Chang, JF; Chelkov, G; Chen, G; Chen, HS; Chen, HY; Chen, JC; Chen, ML; Chen, SJ; Chen, X; Chen, XR; Chen, YB; Cheng, HP; Chu, XK; Cibinetto, G; Dai, HL; Dai, JP; Dbeyssi, A; Dedovich, D; Deng, ZY; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, LY; Dong, MY; Dou, ZL; Du, SX; Duan, PF; Fan, JZ; Fang, J; Fang, SS; Fang, X; Fang, Y; Farinelli, R; Fava, L; Fedorov, O; Feldbauer, F; Felici, G; Feng, CQ; Fioravanti, E; Fritsch, M; Fu, CD; Gao, Q; Gao, XL; Gao, XY; Gao, Y; Gao, Z; Garzia, I; Goetzen, K; Gong, L; Gong, WX; Gradl, W; Greco, M; Gu, MH; Gu, YT; Guan, YH; Guo, AQ; Guo, LB; Guo, Y; Guo, YP; Haddadi, Z; Hafner, A; Han, S; Hao, XQ; Harris, FA; He, KL; Held, T; Heng, YK; Hou, ZL; Hu, C
Source
Physical Review D. 93(5)
Subject
Language
Abstract
Using a data sample of 1.31×109 J/ψ events accumulated with the BESIII detector, the decay J/ψ→ppφ is studied via two decay modes, φ→KS0KL0 and φ→K+K-. The branching fraction of J/ψ→pp φ is measured to be B(J/ψ→pp φ)=[5.23±0.06(stat)±0.33(syst)]×10-5, which agrees well with a previously published measurement, but with a significantly improved precision. No evident enhancement near the pp-mass threshold, denoted as X(pp ), is observed, and the upper limit on the branching fraction of J/ψ→X(pp )φ→pp φ is determined to be B(J/ψ→X(pp )φ→pp φ)