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arXiv 0903.2529hep-phhep-ex
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Y(4143)可能是Y(3930)的分子伴侣

Y(4143) is probably a molecular partner of Y(3930)

Xiang Liu, Shi-Lin Zhu

摘要:

在讨论了CDF合作在$J/ψϕ$模式下观察到的Y(4143)信号的各种可能解释之后,我们倾向于得出结论,Y(4143)可能是具有$J^{PC}=0^{++}$或$2^{++}$的$D_s^\ast {\bar D}_s^\ast$分子状态,而Y(3930)是其$D^\ast {\bar D}^\ast$分子伴侣,正如我们以前的工作(arXiv:0808.0073)所预测的那样。隐藏的魅力和开放的魅力两体衰变发生通过分子状态内的矢量分量的重新散射,而三体和四体开放的魅力衰变模式是禁止的运动学。因此,它们的宽度自然是窄的。CDF、Babar和Belle的合作可能已经发现了重分子态。我们敦促实验工作者在未来测量它们的量子数并探索它们的辐射衰变模式。

英文摘要:

After discussing the various possible interpretations of the Y(4143) signal observed by the CDF collaboration in the $J/ψϕ$ mode, we tend to conclude that Y(4143) is probably a $D_s^\ast {\bar D}_s^\ast$ molecular state with $J^{PC}=0^{++}$ or $2^{++}$ while Y(3930) is its $D^\ast {\bar D}^\ast$ molecular partner as predicted in our previous work (arXiv:0808.0073). Both the hidden-charm and open charm two-body decays occur through the rescattering of the vector components within the molecular states while the three- and four-body open charm decay modes are forbidden kinematically. Hence their widths are narrow naturally. CDF, Babar and Belle collaborations may have discovered heavy molecular states already. We urge experimentalists to measure their quantum numbers and explore their radiative decay modes in the future.

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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