Charmed baryon weak decays with decuplet baryon and SU(3) flavor symmetry

Geng, Chao–Qiang; Liu, Chia-Wei; Tsai, Tien-Hsueh; Yu, Y.

doi:10.1103/physrevd.99.114022

Cited by 27 publications

(20 citation statements)

References 54 publications

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“…(15), but suppressed due to the Körner-Pati-Woo theorem [32][33][34]. According to the other theoretical calculations [6,7,[22][23][24], B( + c → * +K 0 , * 0 π + ) = 0 is also predicted, which supports that C = 0. Experimentally, B ex ( + c → * +K 0 , * 0 π + ) in Table 2 can be used to test the suppression.…”

Section: Numerical Analysis and Discussionsupporting

confidence: 53%

“…In addition, B c → BV, V → M M with V the vector meson causes more complicated mixtures [1]. The SU (3) flavor (SU (3) f ) symmetry has been widely applied to the charmed baryon decays [4][5][6][7][8][9][10][11][12][13][14][15][16]. By well explaining the data, the flavor symmetry does not appear to be severely broken in B c → BM [17], where B denotes the octet baryon.…”

Section: Introductionmentioning

confidence: 99%

“…By well explaining the data, the flavor symmetry does not appear to be severely broken in B c → BM [17], where B denotes the octet baryon. By contrast, B( + c → * + η) not well interpreted by the SU (3) f symmetry might hint the broken effect in B c → B * M [7], which could be as large as that in the D meson decays [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…For a better understanding of the hadronization in B c → B * M, there have been some theoretical attempts, which are in terms of the pole model, quark model and irreducible SU (3) flavor (SU (3) f ) symmetry [4][5][6][7][22][23][24]. Particularly, the quark-diagram scheme with the topological SU (3) f symmetry provides a clear picture for the decay processes [17,[25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme

et al. 2020

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In the quark-diagram scheme, we study the charmed baryon decays of $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$ B c → B ∗ M , where $$\mathbf{B}_c$$ B c is $$\Lambda _c^+$$ Λ c + or $$\Xi _c^{+(0)}$$ Ξ c + ( 0 ) , together with $$\mathbf{B}^*$$ B ∗ (M) the decuplet baryon (pseudoscalar meson). It is found that only two W-exchange processes are allowed to contribute to $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$ B c → B ∗ M . Particularly, we predict $${\mathcal {B}}(\Lambda _c^+ \rightarrow \Sigma ^{*0(+)} \pi ^{+(0)})=(2.8\pm 0.4)\times 10^{-3}$$ B ( Λ c + → Σ ∗ 0 ( + ) π + ( 0 ) ) = ( 2.8 ± 0.4 ) × 10 - 3 , which respects the isospin symmetry. Besides, we take into account the SU(3) flavor symmetry breaking, in order to explain the observation of $${\mathcal {B}}(\Lambda _c^+\rightarrow \Sigma ^{*+}\eta )$$ B ( Λ c + → Σ ∗ + η ) . For the decays involving $$\Delta ^{++}(uuu)$$ Δ + + ( u u u ) , we predict $${\mathcal {B}}(\Lambda _c^+\rightarrow \Delta ^{++} \pi ^-,\Xi _c^+ \rightarrow \Delta ^{++} K^-) =(7.0\pm 1.4,13.5\pm 2.7)\times 10^{-4}$$ B ( Λ c + → Δ + + π - , Ξ c + → Δ + + K - ) = ( 7.0 ± 1.4 , 13.5 ± 2.7 ) × 10 - 4 as the largest branching fractions in the singly Cabibbo-suppressed $$\Lambda _c^+,\Xi _c^+\rightarrow \mathbf{B}^*M$$ Λ c + , Ξ c + → B ∗ M decay channels, respectively, which are accessible to the LHCb, BELLEII and BESIII experiments.

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Section: Numerical Analysis and Discussionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme

et al. 2020

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“…On the other hand, the operator Q þ , which is a product of SUð3Þ color sextet currents, cannot produce a color singlet baryon. In diagrams T and E 3 , the quark pair antisymmetric in color and flavor [97,98] originating from weak interaction ends up in the decuplet baryon which is forbidden by the above mentioned argument [102][103][104][105][106][107][108]. Since the quark pair ðudÞ3 is in an isospin 0 state, 3 the total quark transition obeys the ΔI ¼ 1=2 rule.…”

Section: Appendix Dmentioning

confidence: 99%

Beauty baryon nonleptonic decays into decuplet baryons and CP -asymmetries based on an SU(3) -flavor analysis

2020

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We consider charmless weak decays of beauty baryons into decuplet baryons and pseudoscalar mesons in a general framework based on the SUð3Þ-flavor decomposition of the decay amplitudes. The dynamical assumption independent SUð3Þ analysis accounts for the effects of an arbitrarily broken SUð3Þ symmetry in these decays. An alternative approach in terms of quark diagrams is also provided and compared with the SUð3Þ decomposition in the limit of an exact SUð3Þ-flavor symmetry. Furthermore, the symmetries of the effective Hamiltonian is used to relate or neglect reduced SUð3Þ amplitudes to derive several sum rule relations between amplitudes and relations between CP asymmetries in these decays and identify those that hold even if SUð3Þ is broken.

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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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Charmed baryon weak decays with decuplet baryon and SU(3) flavor symmetry

Cited by 27 publications

References 54 publications

Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme

Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme

Beauty baryon nonleptonic decays into decuplet baryons and CP -asymmetries based on an SU(3) -flavor analysis

Generation of isospin sum rules in heavy hadron weak decays

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