X(4260)和psi(3D)、psi(5S)、psi(4D)、psi(6S)和psi(5D)的可能确认,单位为J/psi pi+ pi-
The X(4260) and possible confirmation of psi(3D), psi(5S), psi(4D), psi(6S) and psi(5D) in J/psi pi+ pi-
摘要:
通过对粲偶素区域中矢量量子数的完整产生振幅中应该存在的缺失信号进行建模,分析了BABAR合作[ arXiv:hep-ex/0506081,arXiv:0808.1543 ]中关于e+ e-> J/psi pi+ pi-和X(4260)增强的数据。因此,它表明,数据包含的证据存在的psi(5S),psi(4D),psi(6S)和psi(5D)的c-cbar矢量状态,并进一步明确指示的质量和宽度的psi(3D)。此外,它表明,psi(3S),psi(2D)和psi(4S)的符号可以在相同的数据中观察到。最后,我们认为X(4260)的增强不是共振,而是与D(s)(*)-Dbar(s)(*)阈值的打开和与J/psi f(0)(980)通道的耦合有关的现象。
英文摘要:
Data on e+ e- --> J/psi pi+ pi- and the X(4260) enhancement by the BABAR collaboration [ arXiv:hep-ex/0506081, arXiv:0808.1543 ] are analysed by modelling missing signals that should be present in the complete production amplitude with vector quantum numbers in the charmonium region. Thus, it is shown that the data contain evidence for the existence of the psi(5S), the psi(4D), the psi(6S) and the psi(5D) c-cbar vector states, and furthermore a clear indication for the mass and width of the psi(3D). Moreover, it is shown that signs of the psi(3S), psi(2D) and psi(4S) can be observed in the same data. Finally, it is argued that the X(4260) enhancement is not a resonance, but rather a phenomenon connected with the opening of the D(s)(*)-Dbar(s)(*) threshold and the coupling to the J/psi f(0)(980) channel.
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