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arXiv 0906.2278hep-ph
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Y(4140)、X(4260)、psi(2D)、psi(4S)和暂定psi(3D)

The Y(4140), X(4260), psi(2D), psi(4S) and tentative psi(3D)

Eef van Beveren, George Rupp

摘要:

分析了CDF协作组最近报道的B+ --> J/psi phi K+和Y(4140)增强的数据。阈值行为,以及X(4260)增强的痕迹,已知的c-cbar共振psi(2D),psi(4S),和一个试探性的psi(3D)状态,如在质量分布中观察到的,表明J/psi+phi系统具有量子数JPC=1--。然后,有人认为,Y(4140)增强并不代表任何类型的共振,而是J/psi+phi通道开放的自然结果。

英文摘要:

Data on B+ --> J/psi phi K+ and the Y(4140) enhancement recently reported by the CDF collaboration [arxiv:0903.2229] are analysed. The threshold behaviour, as well as traces of the X(4260) enhancement, the known c-cbar resonances psi(2D), psi(4S), and a tentative psi(3D) state, as observed in the mass distribution, suggest that the J/psi+phi system has quantum numbers JPC=1--. It is then argued that the Y(4140) enhancement does not represent any kind of resonance, but instead is a natural consequence of the opening of the J/psi+phi channel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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