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Decay properties of $$P_c$$ P c states through the Fierz rearrangement
The European Physical Journal C ( IF 4.4 ) Pub Date : 2020-10-13 , DOI: 10.1140/epjc/s10052-020-08519-1
Hua-Xing Chen

We systematically study hidden-charm pentaquark currents with the quark configurations \([\bar{c} u][u d c]\), \([\bar{c} d][u u c]\), and \([\bar{c} c][u u d]\). Some of their relations are derived using the Fierz rearrangement of the Dirac and color indices, and the obtained results are used to study strong decay properties of \(P_c\) states as \(\bar{D}^{(*)} \varSigma _c\) hadronic molecules. We calculate their relative branching ratios for the \(J/\psi p\), \(\eta _c p\), \(\chi _{c0} p\), \(\chi _{c1} p\), \(\bar{D}^{(*)0} \varLambda _c^+\), \(\bar{D}^{0} \varSigma _c^{+}\), and \(\bar{D}^{-} \varSigma _c^{++}\) decay channels. We propose to search for the \(P_c(4312)\) in the \(\eta _c p\) channel and the \(P_c(4440)/P_c(4457)\) in the \(\bar{D}^{0} \varLambda _c^+\) channel.

A preprint version of the article is available at ArXiv.


中文翻译:

通过Fierz重排,$$ P_c $$ P c的衰减特性

我们系统地研究了夸克配置\([\ bar {c} u] [udc] \)\([\ bar {c} d] [uuc] \)\([\ bar {c} c] [uud] \)。它们的某些关系是使用Dirac的Fierz重排和颜色索引导出的,所得结果用于研究\(P_c \)状态的强衰减特性,如\(\ bar {D} ^ {(*)} \ varSigma强子分子。我们针对\(J / \ psi p \)\(\ eta _c p \)\(\ chi _ {c0} p \)\(\ chi _ {c1} p \)计算它们的相对分支比率,\(\ bar {D} ^ {(*)0} \ varLambda _c ^ + \)\(\ bar {D} ^ {0} \ varSigma _c ^ {+} \)\(\ bar {D} ^ {-} \ varSigma _c ^ {++} \)衰减通道。我们建议在\(\ eta _c p \)通道中搜索\(P_c(4312)\),并在\(\ bar {D} ^}中搜索\(P_c(4440)/ P_c(4457)\){0} \ varLambda _c ^ + \)通道。

该文章的预印本可从ArXiv获得。
更新日期:2020-10-13
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