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

J. Z. Bai; Y. Ban; J. G. Bian; X. Cai; J. F. Chang; H. F. Chen; H. S. Chen; J. Chen; Jie Chen; J. C. Chen; Y. B. Chen; S. P. Chi; Y. P. Chu; X. Z. Cui; Y. M. Dai; Y. S. Dai; L. Y. Dong; S. X. Du; Z. Z. Du; W. Dunwoodie; J. Fang; S. S. Fang; C. D. Fu; H. Y. Fu; L. P. Fu; C. S. Gao; M. L. Gao; Y. N. Gao; M. Y. Gong; W. X. Gong; S. D. Gu; Y. N. Guo; Y. Q. Guo; Z. J. Guo; S. W. Han; F. A. Harris; J. He; K. L. He; M. He; X. He; Y. K. Heng; T. Hong; H. M. Hu; T. Hu; G. S. Huang; L. Huang; X. P. Huang; J. M. Izen; X. B. Ji; C. H. Jiang; X. S. Jiang; D. P. Jin; S. Jin; Y. Jin; B. D. Jones; Z. J. Ke; D. Kong; Y. F. Lai; F. Li; G. Li; H. H. Li; J. Li; J. C. Li; K. Li; Q. J. Li; R. B. Li; R. Y. Li; W. Li; W. G. Li; X. Q. Li; X. S. Li; C. F. Liu; C. X. Liu; Fang Liu; F. Liu; H. M. Liu; J. B. Liu; J. P. Liu; R. G. Liu; Y. Liu; Z. A. Liu; Z. X. Liu; X. C. Lou; G. R. Lu; F. Lu; H. J. Lu; J. G. Lu; Z. J. Lu; X. L. Luo; E. C. Ma; F. C. Ma; J. M. Ma; R. Malchow; Z. P. Mao; X. C. Meng; X. H. Mo; J. Nie; Z. D. Nie; S. L. Olsen; D. Paluselli; H. P. Peng; N. D. Qi; C. D. Qian; J. F. Qiu; G. Rong; D. L. Shen; H. Shen; X. Y. Shen; H. Y. Sheng; F. Shi; L. W. Song; H. S. Sun; S. S. Sun; Y. Z. Sun; Z. J. Sun; S. Q. Tang; X. Tang; D. Tian; Y. R. Tian; W. Toki; G. L. Tong; G. S. Varner; J. Wang; J. Z. Wang; L. Wang; L. S. Wang; M. Wang; Meng Wang; P. Wang; P. L. Wang; W. F. Wang; Y. F. Wang; Zhe Wang; Z. Wang; Zheng Wang; Z. Y. Wang; C. L. Wei; N. Wu; X. M. Xia; X. X. Xie; G. F. Xu; Y. Xu; S. T. Xue; M. L. Yan; W. B. Yan; G. A. Yang; H. X. Yang; J. Yang; S. D. Yang; M. H. Ye; Y. X. Ye; J. Ying; C. S. Yu; G. W. Yu; C. Z. Yuan; J. M. Yuan; Y. Yuan; Q. Yue; S. L. Zang; Y. Zeng; B. X. Zhang; B. Y. Zhang; C. C. Zhang; D. H. Zhang; H. Y. Zhang; J. Zhang; J. M. Zhang; J. W. Zhang; L. S. Zhang; Q. J. Zhang; S. Q. Zhang; X. Y. Zhang; Y. J. Zhang; Yiyun Zhang; Y. Y. Zhang; Z. P. Zhang; D. X. Zhao; Jiawei Zhao; J. W. Zhao; P. P. Zhao; W. R. Zhao; Y. B. Zhao; Z. G. Zhao; J. P. Zheng; L. S. Zheng; Z. P. Zheng; X. C. Zhong; B. Q. Zhou; G. M. Zhou; L. Zhou; N. F. Zhou; K. J. Zhu; Q. M. Zhu; Yingchun Zhu; Y. C. Zhu; Y. S. Zhu; Z. A. Zhu; B. A. Zhuang; B. S. Zou

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

J. Z. Bai, Y. Ban, J. G. Bian, X. Cai, J. F. Chang, H. F. Chen, H. S. Chen, J. Chen, Jie Chen, J. C. Chen, Y. B. Chen, S. P. Chi, Y. P. Chu, X. Z. Cui, Y. M. Dai, Y. S. Dai, L. Y. Dong, S. X. Du, Z. Z. Du, W. DunwoodieJ. Fang, S. S. Fang, C. D. Fu, H. Y. Fu, L. P. Fu, C. S. Gao, M. L. Gao, Y. N. Gao, M. Y. Gong, W. X. Gong, S. D. Gu, Y. N. Guo, Y. Q. Guo, Z. J. Guo, S. W. Han, F. A. Harris, J. He, K. L. He, M. He, X. He, Y. K. Heng, T. Hong, H. M. Hu, T. Hu, G. S. Huang, L. Huang, X. P. Huang, J. M. Izen, X. B. Ji, C. H. Jiang, X. S. Jiang, D. P. Jin, S. Jin, Y. Jin, B. D. Jones, Z. J. Ke, D. Kong, Y. F. Lai, F. Li, G. Li, H. H. Li, J. Li, J. C. Li, K. Li, Q. J. Li, R. B. Li, R. Y. Li, W. Li, W. G. Li, X. Q. Li, X. S. Li, C. F. Liu, C. X. Liu, Fang Liu, F. Liu, H. M. Liu, J. B. Liu, J. P. Liu, R. G. Liu, Y. Liu, Z. A. Liu, Z. X. Liu, X. C. Lou, G. R. Lu, F. Lu, H. J. Lu, J. G. Lu, Z. J. Lu, X. L. Luo, E. C. Ma, F. C. Ma, J. M. Ma, R. Malchow, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie, Z. D. Nie, S. L. Olsen, D. Paluselli, H. P. Peng, N. D. Qi, C. D. Qian, J. F. Qiu, G. Rong, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, F. Shi, L. W. Song, H. S. Sun, S. S. Sun, Y. Z. Sun, Z. J. Sun, S. Q. Tang, X. Tang, D. Tian, Y. R. Tian, W. Toki, G. L. Tong, G. S. Varner, J. Wang, J. Z. Wang, L. Wang, L. S. Wang, M. Wang, Meng Wang, P. Wang, P. L. Wang, W. F. Wang, Y. F. Wang, Zhe Wang, Z. Wang, Zheng Wang, Z. Y. Wang, C. L. Wei, N. Wu, X. M. Xia, X. X. Xie, G. F. Xu, Y. Xu, S. T. Xue, M. L. Yan, W. B. Yan, G. A. Yang, H. X. Yang, J. Yang, S. D. Yang, M. H. Ye, Y. X. Ye, J. Ying, C. S. Yu, G. W. Yu, C. Z. Yuan, J. M. Yuan, Y. Yuan, Q. Yue, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. Y. Zhang, J. Zhang, J. M. Zhang, J. W. Zhang, L. S. Zhang, Q. J. Zhang, S. Q. Zhang, X. Y. Zhang, Y. J. Zhang, Yiyun Zhang, Y. Y. Zhang, Z. P. Zhang, D. X. Zhao, Jiawei Zhao, J. W. Zhao, P. P. Zhao, W. R. Zhao, Y. B. Zhao, Z. G. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, X. C. Zhong, B. Q. Zhou, G. M. Zhou, L. Zhou, N. F. Zhou, K. J. Zhu, Q. M. Zhu, Yingchun Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, B. A. Zhuang, B. S. Zou

Triple-Axis

Research output: Contribution to journal › Article › peer-review

330 Scopus citations

Abstract

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.

Original language	English
Article number	022001
Pages (from-to)	022001/1-022001/5
Journal	Physical Review Letters
Volume	91
Issue number	2
State	Published - Jul 11 2003

Cite this

Bai, J. Z., Ban, Y., Bian, J. G., Cai, X., Chang, J. F., Chen, H. F., Chen, H. S., Chen, J., Chen, J., Chen, J. C., Chen, Y. B., Chi, S. P., Chu, Y. P., Cui, X. Z., Dai, Y. M., Dai, Y. S., Dong, L. Y., Du, S. X., Du, Z. Z., ... Zou, B. S. (2003). Observation of a near-threshold enhancement in the pp̄ mass spectrum from radiative J/ψ → γpp̄ decays. Physical Review Letters, 91(2), 022001/1-022001/5. Article 022001.

@article{ef2f8fbd417c4931a8285788514f24b3,

title = "Observation of a near-threshold enhancement in the p{\=p} mass spectrum from radiative J/ψ → γp{\=p} decays",

abstract = "A study of the low-mass p{\=p} 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 p{\=p} systems with even C parity and, thus, probes states with different quantum numbers.",

author = "Bai, \{J. Z.\} and Y. Ban and Bian, \{J. G.\} and X. Cai and Chang, \{J. F.\} and Chen, \{H. F.\} and Chen, \{H. S.\} and J. Chen and Jie Chen and Chen, \{J. C.\} and Chen, \{Y. B.\} and Chi, \{S. P.\} and Chu, \{Y. P.\} and Cui, \{X. Z.\} and Dai, \{Y. M.\} and Dai, \{Y. S.\} and Dong, \{L. Y.\} and Du, \{S. X.\} and Du, \{Z. Z.\} and W. Dunwoodie and J. Fang and Fang, \{S. S.\} and Fu, \{C. D.\} and Fu, \{H. Y.\} and Fu, \{L. P.\} and Gao, \{C. S.\} and Gao, \{M. L.\} and Gao, \{Y. N.\} and Gong, \{M. Y.\} and Gong, \{W. X.\} and Gu, \{S. D.\} and Guo, \{Y. N.\} and Guo, \{Y. Q.\} and Guo, \{Z. J.\} and Han, \{S. W.\} and Harris, \{F. A.\} and J. He and He, \{K. L.\} and M. He and X. He and Heng, \{Y. K.\} and T. Hong and Hu, \{H. M.\} and T. Hu and Huang, \{G. S.\} and L. Huang and Huang, \{X. P.\} and Izen, \{J. M.\} and Ji, \{X. B.\} and Jiang, \{C. H.\} and Jiang, \{X. S.\} and Jin, \{D. P.\} and S. Jin and Y. Jin and Jones, \{B. D.\} and Ke, \{Z. J.\} and D. Kong and Lai, \{Y. F.\} and F. Li and G. Li and Li, \{H. H.\} and J. Li and Li, \{J. C.\} and K. Li and Li, \{Q. J.\} and Li, \{R. B.\} and Li, \{R. Y.\} and W. Li and Li, \{W. G.\} and Li, \{X. Q.\} and Li, \{X. S.\} and Liu, \{C. F.\} and Liu, \{C. X.\} and Fang Liu and F. Liu and Liu, \{H. M.\} and Liu, \{J. B.\} and Liu, \{J. P.\} and Liu, \{R. G.\} and Y. Liu and Liu, \{Z. A.\} and Liu, \{Z. X.\} and Lou, \{X. C.\} and Lu, \{G. R.\} and F. Lu and Lu, \{H. J.\} and Lu, \{J. G.\} and Lu, \{Z. J.\} and Luo, \{X. L.\} and Ma, \{E. C.\} and Ma, \{F. C.\} and Ma, \{J. M.\} and R. Malchow and Mao, \{Z. P.\} and Meng, \{X. C.\} and Mo, \{X. H.\} and J. Nie and Nie, \{Z. D.\} and Olsen, \{S. L.\} and D. Paluselli and Peng, \{H. P.\} and Qi, \{N. D.\} and Qian, \{C. D.\} and Qiu, \{J. F.\} and G. Rong and Shen, \{D. L.\} and H. Shen and Shen, \{X. Y.\} and Sheng, \{H. Y.\} and F. Shi and Song, \{L. W.\} and Sun, \{H. S.\} and Sun, \{S. S.\} and Sun, \{Y. Z.\} and Sun, \{Z. J.\} and Tang, \{S. Q.\} and X. Tang and D. Tian and Tian, \{Y. R.\} and W. Toki and Tong, \{G. L.\} and Varner, \{G. S.\} and J. Wang and Wang, \{J. Z.\} and L. Wang and Wang, \{L. S.\} and M. Wang and Meng Wang and P. Wang and Wang, \{P. L.\} and Wang, \{W. F.\} and Wang, \{Y. F.\} and Zhe Wang and Z. Wang and Zheng Wang and Wang, \{Z. Y.\} and Wei, \{C. L.\} and N. Wu and Xia, \{X. M.\} and Xie, \{X. X.\} and Xu, \{G. F.\} and Y. Xu and Xue, \{S. T.\} and Yan, \{M. L.\} and Yan, \{W. B.\} and Yang, \{G. A.\} and Yang, \{H. X.\} and J. Yang and Yang, \{S. D.\} and Ye, \{M. H.\} and Ye, \{Y. X.\} and J. Ying and Yu, \{C. S.\} and Yu, \{G. W.\} and Yuan, \{C. Z.\} and Yuan, \{J. M.\} and Y. Yuan and Q. Yue and Zang, \{S. L.\} and Y. Zeng and Zhang, \{B. X.\} and Zhang, \{B. Y.\} and Zhang, \{C. C.\} and Zhang, \{D. H.\} and Zhang, \{H. Y.\} and J. Zhang and Zhang, \{J. M.\} and Zhang, \{J. W.\} and Zhang, \{L. S.\} and Zhang, \{Q. J.\} and Zhang, \{S. Q.\} and Zhang, \{X. Y.\} and Zhang, \{Y. J.\} and Yiyun Zhang and Zhang, \{Y. Y.\} and Zhang, \{Z. P.\} and Zhao, \{D. X.\} and Jiawei Zhao and Zhao, \{J. W.\} and Zhao, \{P. P.\} and Zhao, \{W. R.\} and Zhao, \{Y. B.\} and Zhao, \{Z. G.\} and Zheng, \{J. P.\} and Zheng, \{L. S.\} and Zheng, \{Z. P.\} and Zhong, \{X. C.\} and Zhou, \{B. Q.\} and Zhou, \{G. M.\} and L. Zhou and Zhou, \{N. F.\} and Zhu, \{K. J.\} and Zhu, \{Q. M.\} and Yingchun Zhu and Zhu, \{Y. C.\} and Zhu, \{Y. S.\} and Zhu, \{Z. A.\} and Zhuang, \{B. A.\} and Zou, \{B. S.\}",

year = "2003",

month = jul,

day = "11",

language = "English",

volume = "91",

pages = "022001/1--022001/5",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

Bai, JZ, Ban, Y, Bian, JG, Cai, X, Chang, JF, Chen, HF, Chen, HS, Chen, J, 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, 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, Peng, HP, Qi, ND, Qian, CD, Qiu, JF, Rong, G, Shen, DL, Shen, H, Shen, XY, Sheng, HY, Shi, F, Song, LW, Sun, HS, Sun, SS, Sun, YZ, Sun, ZJ, Tang, SQ, Tang, X, Tian, D, Tian, YR, Toki, W, Tong, GL, Varner, GS, Wang, J, Wang, JZ, Wang, L, Wang, LS, Wang, M, Wang, M, Wang, P, Wang, PL, Wang, WF, Wang, YF, Wang, Z, Wang, Z, Wang, Z, Wang, ZY, Wei, CL, Wu, N, Xia, XM, Xie, XX, Xu, GF, Xu, Y, Xue, ST, Yan, ML, Yan, WB, Yang, GA, Yang, HX, Yang, J, Yang, SD, Ye, MH, Ye, YX, Ying, J, Yu, CS, Yu, GW, Yuan, CZ, Yuan, JM, Yuan, Y, Yue, Q, Zang, SL, Zeng, Y, Zhang, BX, Zhang, BY, Zhang, CC, Zhang, DH, Zhang, HY, Zhang, J, Zhang, JM, Zhang, JW, Zhang, LS, Zhang, QJ, Zhang, SQ, Zhang, XY, Zhang, YJ, Zhang, Y, Zhang, YY, Zhang, ZP, Zhao, DX, Zhao, J, Zhao, JW, Zhao, PP, Zhao, WR, Zhao, YB, Zhao, ZG, Zheng, JP, Zheng, LS, Zheng, ZP, Zhong, XC, Zhou, BQ, Zhou, GM, Zhou, L, Zhou, NF, Zhu, KJ, Zhu, QM, Zhu, Y, Zhu, YC, Zhu, YS, Zhu, ZA, Zhuang, BA & Zou, BS 2003, 'Observation of a near-threshold enhancement in the pp̄ mass spectrum from radiative J/ψ → γpp̄ decays', Physical Review Letters, vol. 91, no. 2, 022001, pp. 022001/1-022001/5.

TY - JOUR

T1 - Observation of a near-threshold enhancement in the pp̄ mass spectrum from radiative J/ψ → γpp̄ decays

AU - Bai, J. Z.

AU - Ban, Y.

AU - Bian, J. G.

AU - Cai, X.

AU - Chang, J. F.

AU - Chen, H. F.

AU - Chen, H. S.

AU - Chen, J.

AU - Chen, Jie

AU - Chen, J. C.

AU - Chen, Y. B.

AU - Chi, S. P.

AU - Chu, Y. P.

AU - Cui, X. Z.

AU - Dai, Y. M.

AU - Dai, Y. S.

AU - Dong, L. Y.

AU - Du, S. X.

AU - Du, Z. Z.

AU - Dunwoodie, W.

AU - Fang, J.

AU - Fang, S. S.

AU - Fu, C. D.

AU - Fu, H. Y.

AU - Fu, L. P.

AU - Gao, C. S.

AU - Gao, M. L.

AU - Gao, Y. N.

AU - Gong, M. Y.

AU - Gong, W. X.

AU - Gu, S. D.

AU - Guo, Y. N.

AU - Guo, Y. Q.

AU - Guo, Z. J.

AU - Han, S. W.

AU - Harris, F. A.

AU - He, J.

AU - He, K. L.

AU - He, M.

AU - He, X.

AU - Heng, Y. K.

AU - Hong, T.

AU - Hu, H. M.

AU - Hu, T.

AU - Huang, G. S.

AU - Huang, L.

AU - Huang, X. P.

AU - Izen, J. M.

AU - Ji, X. B.

AU - Jiang, C. H.

AU - Jiang, X. S.

AU - Jin, D. P.

AU - Jin, S.

AU - Jin, Y.

AU - Jones, B. D.

AU - Ke, Z. J.

AU - Kong, D.

AU - Lai, Y. F.

AU - Li, F.

AU - Li, G.

AU - Li, H. H.

AU - Li, J.

AU - Li, J. C.

AU - Li, K.

AU - Li, Q. J.

AU - Li, R. B.

AU - Li, R. Y.

AU - Li, W.

AU - Li, W. G.

AU - Li, X. Q.

AU - Li, X. S.

AU - Liu, C. F.

AU - Liu, C. X.

AU - Liu, Fang

AU - Liu, F.

AU - Liu, H. M.

AU - Liu, J. B.

AU - Liu, J. P.

AU - Liu, R. G.

AU - Liu, Y.

AU - Liu, Z. A.

AU - Liu, Z. X.

AU - Lou, X. C.

AU - Lu, G. R.

AU - Lu, F.

AU - Lu, H. J.

AU - Lu, J. G.

AU - Lu, Z. J.

AU - Luo, X. L.

AU - Ma, E. C.

AU - Ma, F. C.

AU - Ma, J. M.

AU - Malchow, R.

AU - Mao, Z. P.

AU - Meng, X. C.

AU - Mo, X. H.

AU - Nie, J.

AU - Nie, Z. D.

AU - Olsen, S. L.

AU - Paluselli, D.

AU - Peng, H. P.

AU - Qi, N. D.

AU - Qian, C. D.

AU - Qiu, J. F.

AU - Rong, G.

AU - Shen, D. L.

AU - Shen, H.

AU - Shen, X. Y.

AU - Sheng, H. Y.

AU - Shi, F.

AU - Song, L. W.

AU - Sun, H. S.

AU - Sun, S. S.

AU - Sun, Y. Z.

AU - Sun, Z. J.

AU - Tang, S. Q.

AU - Tang, X.

AU - Tian, D.

AU - Tian, Y. R.

AU - Toki, W.

AU - Tong, G. L.

AU - Varner, G. S.

AU - Wang, J.

AU - Wang, J. Z.

AU - Wang, L.

AU - Wang, L. S.

AU - Wang, M.

AU - Wang, Meng

AU - Wang, P.

AU - Wang, P. L.

AU - Wang, W. F.

AU - Wang, Y. F.

AU - Wang, Zhe

AU - Wang, Z.

AU - Wang, Zheng

AU - Wang, Z. Y.

AU - Wei, C. L.

AU - Wu, N.

AU - Xia, X. M.

AU - Xie, X. X.

AU - Xu, G. F.

AU - Xu, Y.

AU - Xue, S. T.

AU - Yan, M. L.

AU - Yan, W. B.

AU - Yang, G. A.

AU - Yang, H. X.

AU - Yang, J.

AU - Yang, S. D.

AU - Ye, M. H.

AU - Ye, Y. X.

AU - Ying, J.

AU - Yu, C. S.

AU - Yu, G. W.

AU - Yuan, C. Z.

AU - Yuan, J. M.

AU - Yuan, Y.

AU - Yue, Q.

AU - Zang, S. L.

AU - Zeng, Y.

AU - Zhang, B. X.

AU - Zhang, B. Y.

AU - Zhang, C. C.

AU - Zhang, D. H.

AU - Zhang, H. Y.

AU - Zhang, J.

AU - Zhang, J. M.

AU - Zhang, J. W.

AU - Zhang, L. S.

AU - Zhang, Q. J.

AU - Zhang, S. Q.

AU - Zhang, X. Y.

AU - Zhang, Y. J.

AU - Zhang, Yiyun

AU - Zhang, Y. Y.

AU - Zhang, Z. P.

AU - Zhao, D. X.

AU - Zhao, Jiawei

AU - Zhao, J. W.

AU - Zhao, P. P.

AU - Zhao, W. R.

AU - Zhao, Y. B.

AU - Zhao, Z. G.

AU - Zheng, J. P.

AU - Zheng, L. S.

AU - Zheng, Z. P.

AU - Zhong, X. C.

AU - Zhou, B. Q.

AU - Zhou, G. M.

AU - Zhou, L.

AU - Zhou, N. F.

AU - Zhu, K. J.

AU - Zhu, Q. M.

AU - Zhu, Yingchun

AU - Zhu, Y. C.

AU - Zhu, Y. S.

AU - Zhu, Z. A.

AU - Zhuang, B. A.

AU - Zou, B. S.

PY - 2003/7/11

Y1 - 2003/7/11

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/79961019261

M3 - Article

AN - SCOPUS:79961019261

SN - 0031-9007

VL - 91

SP - 022001/1-022001/5

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 022001

ER -

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

Abstract

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