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arXiv 2201.07293hep-ph
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从手征夸克-孤子模型看重子的景观

Landscape of heavy baryons from the perspective of the chiral quark-soliton model

Maxim V. Polyakov, Michal Praszalowicz

摘要:

我们采用手征夸克孤子模型和重夸克对称性来描述魅与美重子的谱。重子可以根据轻扇区的SU(3)表示进行分类。我们认为,最近发现的$Ξ_b$状态可以被解释为负宇称激发的反三重态或六重态,和$Σ_b$状态作为负宇称六重态。这种分配的衰变模式的后果进行了讨论,还预测的质量尚未测量的六重体成员。

英文摘要:

We employ the chiral quark-soliton model and the heavy quark symmetry to describe spectra of charm and beauty baryons. Heavy baryons can be classified according to the SU(3) representations of the light sector. We argue that recently discovered $Ξ_b$ states can be interpreted as negative parity excited anti-triplets or sextets, and the $Σ_b$ states as negative parity sextets. Consequences of such assignments for the decay patterns are discussed and also predictions of masses of the yet unmeasured sextet members are given.

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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