The σ pole in J/ψ→ωπ+π−

omegapi(+)pi(-) is studied. There are conspicuous omegaf(2)(1270) and b(1)(1235)pi signals. At low pipi mass, a large, broad peak due to the sigma is observed, and its pole position is determined to be (541 +/- 39) - i (252 +/- 42) MeV from the mean of six analyses. The errors, which are dominated by the systematic errors, cover the statistical and systematic errors in the six analyses, as well as the observed variation of the six analyses. (C) 2004 Elsevier B.V. All rights reserved. -->
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2004.07.052
Přístupová URL adresa: https://explore.openaire.eu/search/publication?articleId=doi_________::14d0d61048b67cdd4595461dc2fb26b3
https://doi.org/10.1016/j.physletb.2004.07.052
Rights: OPEN
Přírůstkové číslo: edsair.doi...........14d0d61048b67cdd4595461dc2fb26b3
Autor: M. Ablikim, J.Z. Bai, Y. Ban, J.G. Bian, D.V. Bugg, X. Cai, J.F. Chang, H.F. Chen, H.S. Chen, H.X. Chen, J.C. Chen, Jin Chen, Jun Chen, M.L. Chen, Y.B. Chen, S.P. Chi, Y.P. Chu, X.Z. Cui, H.L. Dai, Y.S. Dai, Z.Y. Deng, L.Y. Dong, S.X. Du, Z.Z. Du, J. Fang, S.S. Fang, C.D. Fu, H.Y. Fu, C.S. Gao, Y.N. Gao, M.Y. Gong, W.X. Gong, S.D. Gu, Y.N. Guo, Y.Q. Guo, Z.J. Guo, F.A. Harris, K.L. He, M. He, X. He, Y.K. Heng, H.M. Hu, T. Hu, G.S. Huang, L. Huang, X.P. Huang, X.B. Ji, Q.Y. Jia, C.H. Jiang, X.S. Jiang, D.P. Jin, S. Jin, Y. Jin, Y.F. Lai, F. Li, G. Li, H.H. Li, J. Li, J.C. Li, Q.J. Li, R.B. Li, R.Y. Li, S.M. Li, W.G. Li, X.L. Li, X.Q. Li, X.S. Li, Y.F. Liang, H.B. Liao, C.X. Liu, F. Liu, Fang Liu, H.M. Liu, J.B. Liu, J.P. Liu, R.G. Liu, Z.A. Liu, Z.X. Liu, F. Lu, G.R. Lu, J.G. Lu, C.L. Luo, X.L. Luo, F.C. Ma, J.M. Ma, L.L. Ma, Q.M. Ma, X.Y. Ma, Z.P. Mao, X.H. Mo, J. Nie, Z.D. Nie, S.L. Olsen, H.P. Peng, N.D. Qi, C.D. Qian, H. Qin, T.N. Ruan, J.F. Qiu, Z.Y. Ren, G. Rong, L.Y. Shan, L. Shang, D.L. Shen, X.Y. Shen, H.Y. Sheng, F. Shi, X. Shi, H.S. Sun, S.S. Sun, Y.Z. Sun, Z.J. Sun, X. Tang, N. Tao, Y.R. Tian, G.L. Tong, G.S. Varner, D.Y. Wang, J.Z. Wang, K. Wang, L. Wang, L.S. Wang, M. Wang, P. Wang, P.L. Wang, S.Z. Wang, W.F. Wang, Y.F. Wang, Zhe Wang, Z. Wang, Zheng Wang, Z.Y. Wang, C.L. Wei, D.H. Wei, N. Wu, Y.M. Wu, X.M. Xia, X.X. Xie, B. Xin, G.F. Xu, H. Xu, Y. Xu, S.T. Xue, M.L. Yan, F. Yang, H.X. Yang, J. Yang, S.D. Yang, Y.X. Yang, M. Ye, M.H. Ye, Y.X. Ye, L.H. Yi, Z.Y. Yi, C.S. Yu, G.W. Yu, C.Z. Yuan, J.M. Yuan, Y. Yuan, Q. Yue, S.L. Zang, Yu Zeng, Y. Zeng, B.X. Zhang, B.Y. Zhang, C.C. Zhang, D.H. Zhang, H.Y. Zhang, J. Zhang, J.Y. Zhang, J.W. Zhang, L.S. Zhang, Q.J. Zhang, S.Q. Zhang, X.M. Zhang, X.Y. Zhang, Y.J. Zhang, Y.Y. Zhang, Yiyun Zhang, Z.P. Zhang, Z.Q. Zhang, D.X. Zhao, J.B. Zhao, J.W. Zhao, M.G. Zhao, P.P. Zhao, W.R. Zhao, X.J. Zhao, Y.B. Zhao, Z.G. Zhao, H.Q. Zheng, 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, Y.C. Zhu, Y.S. Zhu, Yingchun Zhu, Z.A. Zhu, B.A. Zhuang, B.S. Zou
Rok vydání: 2004
Předmět:
Zdroj: Physics Letters B. 598:149-158
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2004.07.052
Popis: Using a sample of 58 million J/psi events recorded in the BESII detector, the decay J/psi --> omegapi(+)pi(-) is studied. There are conspicuous omegaf(2)(1270) and b(1)(1235)pi signals. At low pipi mass, a large, broad peak due to the sigma is observed, and its pole position is determined to be (541 +/- 39) - i (252 +/- 42) MeV from the mean of six analyses. The errors, which are dominated by the systematic errors, cover the statistical and systematic errors in the six analyses, as well as the observed variation of the six analyses. (C) 2004 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
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