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arXiv 1401.4229hep-ph
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双粲介子分子的衰变

Decays of double charmed meson molecules

R. Molina, A. Hosaka, H. Nagahiro

摘要:

赝标和/或矢量介子之间的相互作用可以用隐规范拉格朗日函数来研究。在这个框架下,我们研究了粲介子之间的相互作用。此外,还预测了双粲态。这些新的状态接近$D^*D^*$和$D^*D^*_s$阈值,并且具有自旋奇偶性$J^P=1^+$。计算了这些态的衰变宽度,分别命名为$R_{cc}(3970)$和$S_{cc}(4100)$(含奇异态),得到了非奇异态的$44$ MeV和双奇异态的$24$ MeV.基本上,衰变模式是$DD_{(s)}π$和$DD_{(s)}γ$,是由形成分子的$D^*$介子之一发射的$Dπ$和$Dγ$。

英文摘要:

The interaction between pseudoscalar and/or vector mesons can be studied using hidden gauge Lagrangians. In this framework, the interaction between charmed mesons has been studied. Furthermore, doubly charmed states are also predicted. These new states are near the $D^*D^*$ and $D^*D^*_s$ thresholds, and have spin-parity $J^P=1^+$. We evaluate the decay widths of these states, named as $R_{cc}(3970)$ and $S_{cc}(4100)$ (with strangeness), and obtain $44$ MeV for the non-strangeness, and $24$ MeV for the doubly charm-strange state. Essentially, the decay modes are $DD_{(s)}π$ and $DD_{(s)}γ$, being the $Dπ$ and $Dγ$ emitted by one of the $D^*$ meson which forms the molecule.

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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