Two-body charmed baryon decays involving vector meson with SU(3) flavor symmetry

Hsiao, Y. K.; Yu, Y.; Zhao, H.J.

doi:10.1016/j.physletb.2019.03.031

Cited by 34 publications

(36 citation statements)

References 31 publications

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“…It is plausible since the global fit in Refs. [60,61,64,68,70,74,81] give the reasonable estimations for branching fractions of charmed baryon decays. The uncertainty in Eq.…”

Section: Resultsmentioning

confidence: 83%

“…Recent studies for charmed baryon decays in the SU (3) irreducible representation amplitude (IRA) approach [29,40,42,54,60,61,64,68,70,71,74,81] do not analyze C P asymmetries because they ignore the two 3-dimensional irreducible representations and make the approximation of V * cs V us −V * cd V ud in the 15-and 6-dimensional irreducible representations, leading to the vanishing of the contributions proportional to λ b = V * cb V ub . If the contributions proportional to λ b are included, the SU (3) irreducible representation amplitude approach then can be used to investigate C P asymmetries in the charmed baryon decays.…”

Section: Effective Hamiltonian Of Charm Decaymentioning

confidence: 99%

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Sum rules for CP asymmetries of charmed baryon decays in the $$SU(3)_F$$ limit

Wang

2019

Eur. Phys. J. C

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Motivated by the recent LHCb observation of C P violation in charm, we study C P violation in the charmed baryon decays. A simple method to search for the C P violation relations in the flavor SU (3) limit, which is associated with a complete interchange of d and s quarks, is proposed. With this method, hundreds of C P violation sum rules in the doubly and singly charmed baryon decays can be found. As examples, the C P violation sum rules in twobody charmed baryon decays are presented. Some of the C P violation sum rules could help the experiment to find better observables. As byproducts, the branching fraction of + c → pK − π + is predicted to be (1.7 ± 0.5)% in the Uspin limit and the fragmentation-fraction ratio is determined to be f b / f b = 0.065 ± 0.020 using the LHCb data.

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“…It is plausible since the global fit in Refs. [60,61,64,68,70,74,81] give the reasonable estimations for branching fractions of charmed baryon decays. The uncertainty in Eq.…”

Section: Resultsmentioning

confidence: 83%

Section: Effective Hamiltonian Of Charm Decaymentioning

confidence: 99%

Sum rules for CP asymmetries of charmed baryon decays in the $$SU(3)_F$$ limit

Wang

2019

Eur. Phys. J. C

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“…(6) and their components in Eqs. (10), (11) and 12, we derive the matrix elements of the B c → B transition in Eq. (4) as…”

Section: The Light-front Quark Modelmentioning

confidence: 99%

“…The B c and 0 c baryons predominantly decay weakly [1][2][3][4][5], whereas the c ( c ) decays are strong (electromagnetic) processes. There have been more accurate observations for the B c weak decays in the recent years, which have helped to improve the theoretical understanding of the decay processes [6][7][8][9][10][11][12][13][14]. With the lower production cross section of σ (e + e − → 0 c X ) [4], it is an uneasy task to measure 0 c decays.…”

Section: Introductionmentioning

confidence: 99%

Charmed $$\Omega _c$$ weak decays into $$\Omega $$ in the light-front quark model

et al. 2020

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More than ten $$\Omega _c^0$$ Ω c 0 weak decay modes have been measured with the branching fractions relative to that of $$\Omega ^0_c\rightarrow \Omega ^-\pi ^+$$ Ω c 0 → Ω - π + . In order to extract the absolute branching fractions, the study of $$\Omega ^0_c\rightarrow \Omega ^-\pi ^+$$ Ω c 0 → Ω - π + is needed. In this work, we predict $${{\mathcal {B}}}_\pi \equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-\pi ^+)=(5.1\pm 0.7)\times 10^{-3}$$ B π ≡ B ( Ω c 0 → Ω - π + ) = ( 5.1 ± 0.7 ) × 10 - 3 with the $$\Omega _c^0\rightarrow \Omega ^-$$ Ω c 0 → Ω - transition form factors calculated in the light-front quark model. We also predict $${{\mathcal {B}}}_\rho \equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-\rho ^+)=(14.4\pm 0.4)\times 10^{-3}$$ B ρ ≡ B ( Ω c 0 → Ω - ρ + ) = ( 14.4 ± 0.4 ) × 10 - 3 and $${{\mathcal {B}}}_e\equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-e^+\nu _e)=(5.4\pm 0.2)\times 10^{-3}$$ B e ≡ B ( Ω c 0 → Ω - e + ν e ) = ( 5.4 ± 0.2 ) × 10 - 3 . The previous values for $${{\mathcal {B}}}_\rho /{{\mathcal {B}}}_\pi $$ B ρ / B π have been found to deviate from the most recent observation. Nonetheless, our $${{\mathcal {B}}}_\rho /{{\mathcal {B}}}_\pi =2.8\pm 0.4$$ B ρ / B π = 2.8 ± 0.4 is able to alleviate the deviation. Moreover, we obtain $${{\mathcal {B}}}_e/{{\mathcal {B}}}_\pi =1.1\pm 0.2$$ B e / B π = 1.1 ± 0.2 , which is consistent with the current data.

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“…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%

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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Two-body charmed baryon decays involving vector meson with SU(3) flavor symmetry

Cited by 34 publications

References 31 publications

Sum rules for CP asymmetries of charmed baryon decays in the $$SU(3)_F$$ limit

Sum rules for CP asymmetries of charmed baryon decays in the $$SU(3)_F$$ limit

Charmed $$\Omega _c$$ weak decays into $$\Omega $$ in the light-front quark model

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

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