Observation of a near-threshold enhancement in the pp̄ mass spectrum from radiative J/ψ → γpp̄ decays


Journal Article

A study of the low-mass pp̄ pairs produced via radiative decays in a sample of 58×106 J/ψ events accumulated in the upgraded Beijing Spectrometer (BESII) located at the Beijing Electron-Positron Collider (BEPC) at the Beijing Institute of High Energy Physics was reported. This reaction produces pp̄ systems with even C parity and, thus, probes states with different quantum numbers.

Duke Authors

Cited Authors

  • Bai, JZ; Ban, Y; Bian, JG; Cai, X; Chang, JF; Chen, HF; Chen, HS; Chen, J; Chen, JC; Chen, YB; Chi, SP; Chu, YP; Cui, XZ; Dai, YM; Dai, YS; Dong, LY; Du, SX; Du, ZZ; Dunwoodie, W; Fang, J; Fang, SS; Fu, CD; Fu, HY; Fu, LP; Gao, CS; Gao, ML; Gao, YN; Gong, MY; Gong, WX; Gu, SD; Guo, YN; Guo, YQ; Guo, ZJ; Han, SW; Harris, FA; He, J; He, KL; He, M; He, X; Heng, YK; Hong, T; Hu, HM; Hu, T; Huang, GS; Huang, L; Huang, XP; Izen, JM; Ji, XB; Jiang, CH; Jiang, XS; Jin, DP; Jin, S; Jin, Y; Jones, BD; Ke, ZJ; Kong, D; Lai, YF; Li, F; Li, G; Li, HH; Li, J; Li, JC; Li, K; Li, QJ; Li, RB; Li, RY; Li, W; Li, WG; Li, XQ; Li, XS; Liu, CF; Liu, CX; Liu, F; Liu, HM; Liu, JB; Liu, JP; Liu, RG; Liu, Y; Liu, ZA; Liu, ZX; Lou, XC; Lu, GR; Lu, F; Lu, HJ; Lu, JG; Lu, ZJ; Luo, XL; Ma, EC; Ma, FC; Ma, JM; Malchow, R; Mao, ZP; Meng, XC; Mo, XH; Nie, J; Nie, ZD; Olsen, SL; Paluselli, D

Published Date

  • July 11, 2003

Published In

Volume / Issue

  • 91 / 2

International Standard Serial Number (ISSN)

  • 0031-9007

Citation Source

  • Scopus