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Two-Body Hadronic Weak Decays of Bottomed Hadrons
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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.
张颖、何广朝、叶全兴、严大程、华俊、王倩
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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
School of Mathematics and Physics,Changzhou University,Changzhou 213164,China
Southern Center for Nuclear-Science Theory(SCNT),Inst
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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Provincial FundGuangdong Major Project of Basic and Applied Basic ResearchNSFCDeutsche Forschungsgemeinschaft(DFG,German Research Foundation)funds provided to the Sino-German Collaborative Research CenterNatural Science Foundation of Jiangsu Province
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