Two-Body Hadronic Weak Decays of Bottomed Hadrons

张颖 ¹何广朝 ¹叶全兴 ¹严大程 ²华俊 ¹王倩³

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作者信息

1. Key Laboratory of Atomic and Subatomic Structure and Quantum Control(MOE),Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter,Institute of Quantum Matter,South China Normal University,Guangzhou 510006,China;Guangdong-Hong Kong Joint Laboratory of Quantum Matter,Guangdong Provincial Key Laboratory of Nuclear Science,Southern Nuclear Science Computing Center,South China Normal University,Guangzhou 510006,China
2. School of Mathematics and Physics,Changzhou University,Changzhou 213164,China
3. Key Laboratory of Atomic and Subatomic Structure and Quantum Control(MOE),Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter,Institute of Quantum Matter,South China Normal University,Guangzhou 510006,China;Guangdong-Hong Kong Joint Laboratory of Quantum Matter,Guangdong Provincial Key Laboratory of Nuclear Science,Southern Nuclear Science Computing Center,South China Normal University,Guangzhou 510006,China;Southern Center for Nuclear-Science Theory(SCNT),Inst
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Abstract

The structure of light diquarks plays a crucial role in formation of exotic hadrons beyond the conventional quark model,especially with regard to the line shapes of bottomed hadron decays.We study the two-body hadronic weak decays of bottomed baryons and bottomed mesons to probe the light diquark structure and to pin down the quark-quark correlations in the diquark picture.It is found that the light diquark does not favor a compact structure.For instance,the isoscalar diquark[ud]in ∧0b can be easily split and rearranged to formΣ(*)c(D)(*)via the color-suppressed transition.This provides a hint that the hidden charm pentaquark states produced in ∧0b decays could be the Σ(*)c(D)(*)hadronic molecular candidates.This quantitative study resolves the apparent conflicts between the production mechanism and the molecular nature of these Pc states observed in experiment.

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基金项目

National Natural Science Foundation of China(12375073)

National Natural Science Foundation of China(12035007)

National Natural Science Foundation of China(12205106)

National Natural Science Foundation of China(12105028)

Guangdong Provincial Fund(2019QN01X172)

Guangdong Major Project of Basic and Applied Basic Research(2020B0301030008)

NSFC(12070131001)

Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)(196253076-TRR 110)

funds provided to the Sino-German Collaborative Research Center(TRR110)

Natural Science Foundation of Jiangsu Province(BK20200980)

出版年

2024

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDCSCDEI

影响因子：0.515

ISSN：0256-307X

参考文献量69

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