ITA
ENG

Study of N* production from J/psi -> p(p)over-bar eta

Authors

Bai, JZ Ban, Y Bian, JG Chang, JF Chen, AD Chen, HF Chen, HS Chen, JC Chen, XD Chen, YB Cheng, BS Chi, SP Chu, YP Chui, XZ Dai, YS Dong, LY Du, ZZ Fu, HY Fu, LP Gao, CS Gu, SD Guo, YN Guo, ZJ Han, SW Han, Y He, J He, JT He, KL He, M He, X Hong, T Heng, YK Hu, GY Hu, HM Hu, QH Hu, T Huang, GS Huang, XP Huang, YZ Ji, XB Jiang, CH Jin, Y Ke, ZJ Lai, YF Li, D Li, HB Li, HH Li, J Li, JC Li, PQ Li, QJ Li, RY Li, W Li, WG Li, XN Li, XQ Liu, B Liu, F Liu, F Liu, HM Liu, J Liu, JP Liu, TR Liu, RG Liu, Y Liu, ZX Lu, GR Lu, F Lu, JG Lu, ZJ Luo, XL Ma, EC Ma, FC Ma, JM Mao, ZP Meng, XC Mo, XH Nie, J Nie, ZD Qi, ND Qi, XR Qian, CD Qiu, JF Que, YK Rong, G Shao, YY Shen, BW Shen, DL Shen, H Shen, XY Sheng, HY Shi, F Shi, HZ Song, XF Sun, HS Sun, LF Sun, YZ Tang, SQ Tang, X Tong, GL Wang, J Wang, JZ Wang, L Wang, LS Wang, M Wang, M Wang, P Wang, PL Wang, SM Wang, WF Wang, YY Wang, ZY Wei, CL Wu, N Xi, DM Xia, XM Xie, XX Xu, GF Xu, Y Xue, ST Yan, ML Yan, WB Yan, WG Yang, CM Yang, CY Yang, GA Yang, HX Yang, XF Ye, MH Ye, SW Ye, YX Yu, CS Yu, CX Yu, GW Yuan, Y Zeng, Y Zhang, BY Zhang, CC Zhang, DH Zhang, HL Zhang, HY Zhang, J Zhang, JW Zhang, L Zhang, LS Zhang, P Zhang, QJ Zhang, SQ Zhang, XY Zhang, YY Zhang, ZP Zhao, DX Zhao, HW Zhao, JW Zhao, JW Zhao, PP Zhao, WR Zhao, YB Zhao, ZG Zheng, JP Zheng, LS Zheng, ZP Zhong, XC Zhou, BQ Zhou, GM Zhou, L Zhu, KJ Zhu, QM Zhu, YC Zhu, YS Zhu, ZA Zhuang, BA Zou, BS Chiang, HC Peng, GX Wang, JX Zhu, JJ

Citation

Jz. Bai et al., Study of N* production from J/psi -> p(p)over-bar eta, PHYS LETT B, 510(1-4), 2001, pp. 75-82

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICS LETTERS B

ISSN journal

03702693 → ACNP

Volume

510

Issue

1-4

Year of publication

2001

Pages

75 - 82

Database

ISI

SICI code

0370-2693(20010621)510:1-4<75:SONPFJ>2.0.ZU;2-J

Abstract

Data are presented on the reaction J/psi --> <p(p)over bar <eta>> using 7.8 x 10(6) J/psi triggers collected by the BEjing Spectrometer (BES). A parti al wave analysis is performed. A clear enhancement near the p eta((p) over bar eta) threshold is observed. It is fitted with a J(P) = 1/2(-) resonance with mass M = 1530 +/- 10 MeV and width Gamma = 95 +/- 25 MeV. In addition , there is a peak around 1650 MeV with J(P) = 1/2(-) preferred also, fitted with M = 1637 +/- 20 MeV and Gamma = 145(-45)(+80) MeV. These two N* reson ances are believed to be the two well established states, S-11(1535) and S- 11(1650). respectively. It is the first partial wave study of the productio n of these resonances from J/psi decays. (C) 2001 Published by Elsevier Sci ence B.V.