Observation of a Resonance X 1835 in J = ! 0
نویسندگان
چکیده
M. Ablikim, J. Z. Bai, Y. Ban, J. G. Bian, X. Cai, H. F. Chen, H. S. Chen, H. X. Chen, J. C. Chen, Jin Chen, Y. B. Chen, S. P. Chi, Y. P. Chu, X. Z. Cui, Y. S. Dai, Z. Y. Deng, L. Y. Dong,* Q. F. Dong, S. X. Du, Z. Z. Du, J. Fang, S. S. Fang, C. D. Fu, C. S. Gao, Y. N. Gao, S. D. Gu, Y. T. Gu, Y. N. Guo, Y. Q. Guo, Z. J. Guo, F. A. Harris, K. L. He, M. He, Y. K. Heng, H. M. Hu, T. Hu, G. S. Huang, X. P. Huang, X. T. Huang, X. B. Ji, X. S. Jiang, J. B. Jiao, D. P. Jin, S. Jin, Yi Jin, Y. F. Lai, G. Li, H. B. Li, H. H. Li, J. Li, R. Y. Li, S. M. Li, W. D. Li, W. G. Li, X. L. Li, X. Q. Li, Y. L. Li, Y. F. Liang, H. B. Liao, C. X. Liu, F. Liu, Fang Liu, H. H. Liu, H. M. Liu, J. Liu, J. B. Liu, J. P. Liu, R. G. Liu, Z. A. Liu, F. Lu, G. R. Lu, H. J. Lu, J. G. Lu, C. L. Luo, F. C. Ma, H. L. Ma, L. L. Ma, Q. M. Ma, X. B. Ma, Z. P. Mao, X. H. Mo, J. Nie, S. L. Olsen, H. P. Peng, N. D. Qi, H. Qin, 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, J. F. Sun, S. S. Sun, Y. Z. Sun, Z. J. Sun, Z. Q. Tan, X. Tang, Y. R. Tian, G. L. Tong, G. S. Varner, D. Y. Wang, L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, W. F. Wang,1,x Y. F. Wang, Z. Wang, Z. Y. Wang, Zhe Wang, Zheng Wang, C. L. Wei, D. H. Wei, N. Wu, X. M. Xia, X. X. Xie, B. Xin, G. F. Xu, Y. Xu, M. L. Yan, F. Yang, H. X. Yang, J. Yang, Y. X. Yang, M. H. Ye, Y. X. Ye, Z. Y. Yi, G. W. Yu, C. Z. Yuan, J. M. Yuan, Y. Yuan, S. L. Zang, Y. Zeng, Yu Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. Y. Zhang, J. W. Zhang, J. Y. Zhang, Q. J. Zhang, X. M. Zhang, X. Y. Zhang, Y. Y. Zhang, Z. P. Zhang, Z. Q. Zhang, D. X. Zhao, J. W. Zhao, M. G. Zhao, P. P. Zhao, W. R. Zhao, Z. G. Zhao,1,k H. Q. Zheng, J. P. Zheng, Z. P. Zheng, L. Zhou, N. F. Zhou, K. J. Zhu, Q. M. Zhu, Y. C. Zhu, Yingchun Zhu,1,{ Y. S. Zhu, Z. A. Zhu, B. A. Zhuang, X. A. Zhuang, and B. S. Zou
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The possibility of X(1835) discovered by BESII as a 0−+ glueball is studied in this paper. The decay rates of X(1835) → pp̄, V V are associated with gluon spin contents of proton and vector mesons. Estimations of the decay rates of X(1835) → V V, γV, γγ and the cross sections of γγ → X(1835) → f and h1+h2 → X(1835)+... are presented.
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The possibility of X(1835) discovered by BESII as a 0−+ glueball is studied in this paper. The decay rates of X(1835) → pp̄, V V are associated with gluon spin contents of proton and vector mesons. Estimations of the decay rates of X(1835) → V V, γV, γγ and the cross sections of γγ → X(1835) → f and h1+h2 → X(1835)+... are presented.
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After the observation of the strong near-threshold enhancement of proton-antiproton mass spectrum in J/ψ → γpp̄ decay, lots of theoretical investigations have been available such as new resonance, the final-state pp̄ interaction (FSI), pp̄ bound state (or baryonium), glueball, or other exotic (tetra-quark) states. Here, we provide a short review on the current status, especially on the pertinent d...
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