Charmed baryon weak decays with SU(3) flavor symmetry

• Published in: The journal of high energy physics Vol. 2017; no. 11; pp. 1 - 26
• Main Authors: Geng, C. Q., Hsiao, Y. K., Liu, Chia-Wei, Tsai, Tien-Hsueh
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2017; Springer Nature B.V; SpringerOpen
• Subjects: Baryons; Charm (particle physics); Classical and Quantum Gravitation; Decay; Elementary Particles; Flavor (particle physics); Global Symmetries; Heavy Quark Physics; High energy physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Symmetry; Global Symmetries; Heavy Quark Physics
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP11(2017)147

A bstract We study the semileptonic and non-leptonic charmed baryon decays with SU(3) flavor symmetry, where the charmed baryons can be B c  = (Ξ c 0 , Ξ c + , Λ c + ),  B c ′  = ( Σ c (++,+,0) , Ξ c ′ (+,0) , Ω c 0 ),  B cc  = (Ξ cc + + , Ξ cc + , Ω c + ) or  B cc  = Ω ccc + + . With B n (′) denoted as the baryon octet (decuplet), we find that the B c  →  B n ′ ℓ + ν ℓ decays are forbidden, while the Ω c 0  → Ω − ℓ + ν ℓ , Ω cc +  → Ω c 0 ℓ + ν ℓ , and Ω ccc + +  → Ω cc + ℓ + ν ℓ decays are the only existing Cabibbo- allowed modes for B c ′  →  B n ′ ℓ + ν ℓ ,  B cc  →  B c ′ ℓ + ν ℓ , and  B ccc  →  B cc (′) ℓ + ν ℓ , respectively. We predict the rarely studied B c  →  B n (′) M decays, such as ℬ Ξ c 0 → Λ 0 K ¯ 0 , Ξ c + → Ξ 0 π + = 8.3 ± 0.9 , 8.0 ± 4.1 × 10 − 3 and ℬ Λ c + → Δ + + π − , Ξ c 0 → Ω − K + = 5.5 ± 1.3 , 4.8 ± 0.5 × 10 − 3 . For the observation, the doubly and triply charmed baryon decays of Ω cc + → Ξ c + K ¯ 0 , Ξ cc + + → Ξ c + π + , Σ c + + K ¯ 0 , and Ω c c c + + → Ξ cc + + K ¯ 0 , Ω cc + π + , Ξ c + D + are the favored Cabibbo-allowed decays, which are accessible to the BESIII and LHCb experiments.