We study the two-body anti-triplet charmed baryon decays ofthe baryon (vector meson) states. Based on the SU (3) flavor symmetry, we predict that B(Λ + c → Σ + ρ 0 , Λ 0 ρ + ) = (0.61 ± 0.46, 0.74 ± 0.34)%, in agreement with the experimental upper bounds of (1.7, 6)%, respectively. We also find B(Λ + c → Ξ 0 K * + , Σ 0 K * + , Λ 0 K * + ) = (8.7 ± 2.7, 1.2 ± 0.3, 2.0 ± 0.5) × 10 −3 to be compatible with the pseudoscalar counterparts. For the doubly Cabibbo-suppressed decay Ξ + c → pφ, measured for the first time, we predict its branching ratio to be (1.5±0.7)×10 −4 , together with B(Ξ + c → pK * 0 , Σ + φ) = (7.8±2.2, 1.9±0.9)×10 −3 . The B c → B n V decays with B ≃ O(10 −4 − 10 −3 ) are accessible to the BESIII, BELLEII and LHCb experiments. *
In terms of the topological diagram approach with the SU (3) flavor symmetry, we study the two-body anti-triplet charmed baryon decays, whereas the symmetry properties of the baryon wave functions are not taken into account. Since each (non-)factorizable topological amplitude can be extracted with the data, we find that only one W -exchange decaying process can dominantlyit is found that the non-factorizable contributions can cause the destructive interference, such that our result of B(Λ + c → pπ 0 ) = (0.8 ± 0.7) × 10 −4 agrees with the experimental upper bound. We also predict that B(Λ + c → Σ + η ′ ) = (0.5 ± 0.1) × 10 −2 , B(Λ + c → pη ′ ) = (1.0 ± 0.3) × 10 −4 , B(Ξ 0 c → Ξ − K + ) = (5.23 ± 0.04) × 10 −4 and B(Ξ 0 c → Λ 0K 0 , Ξ − π + ) = (0.80 ± 0.20, 1.91 ± 0.17) × 10 −2 , to be compared with the future BESIII and LHCb experiments. *
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.
We study the three-body baryonic B → BB M decays with M representing the η or η meson. Particularly, we predict that B(B − → pη, pη) = (5.3 ± 1.4, 3.3 ± 0.7) × 10 −6 or (4.0 ± 0.7, 4.6 ± 1.1) × 10 −6 , where the errors arise from the non-factorizable effects as well as the uncertainties in the 0 → BB and B → BB transition form factors, while the two different results are due to overall relative signs between the form factors, causing the constructive and destructive interference effects. For the corresponding baryonicB 0 s decays, we find that B(B 0 s → ¯ η, ¯ η) = (1.2 ± 0.3, 2.6 ± 0.8) × 10 −6 or (2.1 ± 0.6, 1.5 ± 0.4) × 10 −6 with the errors similar to those above. The decays in question are accessible to the experiments at BELLE and LHCb.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.