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ψ(2S)two- and three-body hadronic decays

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields2003Vol. 67(5)

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J. Z. Bai, Y. Ban, J. G. Bian, I. Blum, X. Cai, J. F. Chang, H. F. Chen, H. S. Chen, J. Chen, Jie Chen, J. C. Chen, Y. B. Chen, S. P., Y. P. Chu, X. Z. Cui, Y. S. Dai, L. Y. Dong, Zhihong Du, W. Dunwoodie, J. Fang, S. S. Fang, H. Y. Fu, L. P. Fu, C. S. Gao, Y. N. Gao, Ming Gong, P. Gratton, S. Gu, Y. 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. M. Hong, D. G. Hitlin, H. M. Hu, T. Hu, G. S. Huang, X. P. Huang, J. M. Izen, X. B. Ji, Chongyun Jiang, X. S. Jiang, D. P. Jin, S. Jin, Y. Jin, B. D. Jones, Z. J. Ke, M. H. Kelsey, B. K. Kim, D. J. Kong, Y. F. Lai, G. Li, H. H. Li, J. Li, J. C. Li, Q. J. Li, R. Y. Li, Wenyu Li, W. G. Li, X. Q. Li, C. F. Liu, F. Liu, Feng Liu, H. M. Liu, J. P. Liu, R. G. Liu, T. R. Liu, Yufeng Liu, Z. A. Liu, Z. X. Liu, X. C. Lou, B. Lowery, G. R. Lu, F. X. Lu, H. J. Lü, J. G. Lu, Zhenye Lu, X. L. Luo, E. C., F. C., J. M., R. Malchow, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie, Z. D. Nie, S. L. Olsen, J. Oyang, D. Paluselli, L. J. Pan, J. Panetta, H. P. Peng, F. C. Porter, N. D. Qi, C. D. Qian, J. F. Qiu, G. Rong, M. Schernau, D. L. Shen, Hong Shen, X. Y. Shen, H. Y. Sheng, F. Shi, J. Standifird, H. Sun, S. Sun, Y. Z. Sun, X. Tang, D. Tian, W. H. 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, Wenxiang Wang, Y. F. Wang, Y. Y. Wang, Z. Wang, Zheng Wang, Z. Y. Wang, M. Weaver, C. Wei, Nengyou Wu, X. M. Xia, X. X. Xie, G. F. Xu, Y. Xu, S. Xue, M. L. Yan, W. B. Yan, C. Y. Yang, G. Yang, H. X. Yang, W.-C. Yang, M. H. Ye, Shoujie Ye, Y. X. Ye, J. Ying, Yu Chen, G. Yu, C. Z. Yuan, J. M. Yuan, Y. Yuan, Q. Yue, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. Y. Zhang, J. Zhang, J. W. Zhang, L. Zhang, L. S. Zhang, Q. J. Zhang, Shengping Zhang, X. Y. Zhang, Y. Y. Zhang, Yiyun Zhang, Z. P. Zhang, Dongxu 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. Zhong, B. Q. Zhou, G. M. Zhou, Li Zhou, K. J. Zhu, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, B. A. Zhuang, B. S. Zou

Abstract

We report measurements of branching fractions for $\ensuremath{\psi}(2S)$ decays into $\ensuremath{\omega}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}},$ ${b}_{1}\ensuremath{\pi},$ $\ensuremath{\omega}{f}_{2}(1270),$ $\ensuremath{\omega}{K}^{+}{K}^{\ensuremath{-}},$ $\ensuremath{\omega}p\overline{p},$ $\ensuremath{\varphi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}},$ $\ensuremath{\varphi}{f}_{0}(980),$ $\ensuremath{\varphi}{K}^{+}{K}^{\ensuremath{-}},$ and an upper limit for $\ensuremath{\varphi}p\overline{p}$ final states based on a data sample of $(4.02\ifmmode\pm\else\textpm\fi{}0.22)\ifmmode\times\else\texttimes\fi{}{10}^{6}\ensuremath{\psi}(2S)$ events collected with the BESI detector at the Beijing Electron-Positron Collider. The branching fractions for ${b}_{1}\ensuremath{\pi}$ and $\ensuremath{\omega}{f}_{2}(1270)$ update previous BES results, while those for other decay modes are first measurements. The ratios of $\ensuremath{\psi}(2S)$ and $J/\ensuremath{\psi}$ branching fractions are smaller than what is expected from the $12%$ rule by a factor of 5 for $\ensuremath{\omega}{f}_{2}(1270)$ and by a factor of 2 for $\ensuremath{\omega}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}},$ $\ensuremath{\omega}p\overline{p},$ and $\ensuremath{\varphi}{K}^{+}{K}^{\ensuremath{-}},$ while for other studied channels the ratios are consistent with expectations within errors.

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Abstract

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