Anti-triplet charmed baryon decays with the SU(3) Flavor Symmetry

Chia-Wei Liu^1*

¹Department of Physics, National Tsing Hua University, Hsinchu, Taiwan

* Presenter:Chia-Wei Liu, email:ron1a2l3d4@gmail.com

We study the decays of the anti-triplet charmed baryon state (Ξ_c⁰, Ξ_c⁺, Λ_c⁺) based on the SU(3)
flavor symmetry. In particular, after predicting B(Ξ_c⁰→Ξ^-K⁺)=(15.7±0.7)×10^-3 and B(Ξ_c⁺→Ξ^-π⁺π⁺)=(14.7±8.4)×10^-3, we extract that B(Ξ_c⁰→ΛK^-π⁺,ΛK^-K⁺,Ξ^-e⁺ν_e)=(16.8±2.3, 0.45±0.11, 48.7±17.4)×10^-3 and B(Ξ_c⁺→pK⁰_SK⁰_S, Σ⁺K^-π⁺,Ξ⁰π⁺π⁰, Ξ⁰e⁺ν_e)=(1.3±0.8, 13.8±8.0, 33.8±21.9, 33.8^+21.9_-22.6)×10^-3. We also find that B(Ξ_c⁰→Ξ⁰η,Ξ⁰η')=(1.7^+1.0_-1.7, 8.6^+11.0_-6.3), B(Ξ_c⁰→Λη,Λη')=(1.6^+1.2_-0.8, 9.4^+11.6_-6.8)×10^-4 and B(Ξ_c⁺→ Σ⁺η, Σ⁺η')=(28.4^+8.2_-6.9, 13.2^+24.0_-11.9)×10^-4 . These Ξ_cdecays with the branching ratios of O(10^-3~10^-4) are clearly promising to be observed by the BESIII and LHCb experiments.

Keywords: standard model, flavor physics, hadronic physics