Generation of SU(3) sum rule for charmed baryon decay

Wang, Di

doi:10.1007/jhep12(2022)003

Cited by 6 publications

(1 citation statement)

References 53 publications

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“…Note that the light quark symmetry have been successfully adopted in generic hadronic system [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48], which provides a general insight for the decays and productions of hadron, then to be an useful approach to discuss the pentaquark production from B meson. The study is based on the representations of pentaquark, final hadrons and weak transition operator.…”

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The Production of Charm Pentaquark from B meson within SU(3) Analysis

Li¹,

Ye²,

Hu³

2023

Preprint

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We study the masses and production modes of pentaquark with the quark constituent cqqqq, by the tridiquark-diquark model and systematical light flavor quark symmetry SU(3) analysis. The mass splittings show that the S-wave singly charm pentaquark cūdds, c dusu, csudu, and csudd are below their strong decay thresholds, while cūdss, c duss with parity 1 2 − are near their strong decay thresholds, which imply the possibility of stable states. Furthermore, we discuss the production of the concerned 15 states from B meson, the analysis within SU(3) symmetry yields the golden channels of production process,which expected to be work worthily in b-factory. I. INTRODUCTION Recently, there is a renewed interest in the study of pentaquark with heavy quark constituents, especially, the LHCb observation in 2015 of hidden charm pentaquark P c states, P c (4380), P c (4312), P c (4440) and P c (4457), in the Λ 0 b → J/ΨpK − [1, 2], as well as P cs (4459) and P c (4337) in the Ξ − b → J/ΨΛK − and B s → J/Ψpp respectively [3, 4], which have triggered many theoretical studies [5-19]. The existence of pentaquark are proposed by Gell-Mann and Zweig at the birth of quark model in 1964 [20, 21]. But until now, only a couple of hidden charm pentaquark come to light. The open heavy flavor ones, for instance open charm tetraquark state T + cc [22] firstly observed by LHCb in the mass spectrum D 0 D 0 π + in 2021, therefore are expected similarly. Theoretically, the open flavor pentaquarks with charm quark and qqqq have been discussed by the constituent quark model in Ref. [23], rough mass estimates are evaluated in the end of paper. The Chromomagnetic Interaction(CMI) model provides more accurate results in Ref. [24]. In addition, the QCD sum rules and chiral effective field theory offer additional methods to investigate the singly heavy pentaquark, individually the mass around 3.21 GeV [25-27] and 2.7 GeV [28, 29] for ground cuddū state.In the letter, we wound consider the charm pentaquark within the triquark-diquark model. The model is a suitable appropriate [30,31] to deal with the many quarks system, in this framework, the

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The Production of Charm Pentaquark from B meson within SU(3) Analysis

Li¹,

Ye²,

Hu³

2023

Preprint

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Generation of isospin sum rules in heavy hadron weak decays

Wang

2023

J. High Energ. Phys.

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Isospin symmetry is the most precise flavor symmetry. In this work, we propose an approach to generate isospin sum rules for heavy hadron decays without the Wigner-Eckhart invariants. The effective Hamiltonian of heavy quark weak decay is fully invariant under a series of isospin lowering operators $$ {I}_{-}^n $$ I − n and then the isospin sum rules can be generated through several master formulas. It provides a systematic way to study the isospin symmetry of c- and b-hadron weak decays. The theoretical framework of this approach is presented in detail with the nonleptonic decays of D and B mesons as examples. In addition, the V-/U-spin sum rules are derived in a similar algorithm by replacing $$ {I}_{-}^n $$ I − n with $$ {V}_{-}^n/{U}_{-}^n $$ V − n / U − n .

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Nonleptonic two-body weak decays of charmed baryons

Liu

2024

Phys. Rev. D

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We analyze the two-body nonleptonic weak decays of charmed baryons, employing the pole approximation in tandem with the SU(3)F symmetry. We are able to make novel predictions for decay channels of Ωc0→BnP and Bcc→BcA,SP based on the experimental data of BcA→BnP. Here, Bn, BcA, BcS, and Bcc are the low-lying octet, antitriplet charmed, sextet charmed and doubly charmed baryons, respectively, and P is the pseudoscalar meson. Our findings reveal that the fitted effective Wilson coefficient C+=0.469 is notably smaller than the naïve expectation, and the low-lying pole approximation fails to account for B(Λc+→nπ+,Ξ0K+), despite consistencies with the soft meson limit. We further recommend the decay channel Ξcc+→Ξc0π+→Ξ−π+π+π+π− for exploring evidence of Ξcc+, estimating the branching fraction at (1.1±0.6)×10−3. Published by the American Physical Society 2024

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Generation of SU(3) sum rule for charmed baryon decay

Cited by 6 publications

References 53 publications

The Production of Charm Pentaquark from B meson within SU(3) Analysis

The Production of Charm Pentaquark from B meson within SU(3) Analysis

Generation of isospin sum rules in heavy hadron weak decays

Nonleptonic two-body weak decays of charmed baryons

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