Charmed baryon weak decays with SU(3) flavor symmetry. (November 2017)

• Record Type: Journal Article
• Authors: Geng, C.; Hsiao, Y.; Liu, Chia-Wei; Tsai, Tien-Hsueh
• Is Part Of: Journal of high energy physics. Volume 11(2017)
• Page Start: 1
• Page End: 26
• Publication Date: 2017-11
• Subjects: Global Symmetries -- Heavy Quark Physics; Particles (Nuclear physics) -- Periodicals; Particules (Physique nucléaire) -- Périodiques; 539.7605
• DOI: 10.1007/JHEP11(2017)147
• Languages: English
• ISSNs: 1029-8479

Abstract

Abstract We study the semileptonic and non-leptonic charmed baryon decays with SU(3) flavor symmetry, where the charmed baryons can beB c = (Ξc 0, Ξc +, Λc + ), B c ′ = (Σ c (++, +, 0), Ξc ′ (+, 0), Ωc 0 ), B cc = (Ξcc + +, Ξcc +, Ωc + ) or B cc = Ωccc + + . WithB n (′) denoted as the baryon octet (decuplet), we find that theB c → B n ′ ℓ + ν ℓ decays are forbidden, while the Ωc 0 → Ω− ℓ + ν ℓ, Ωcc + → Ωc 0 ℓ + ν ℓ, and Ωccc + + → Ωcc + ℓ + ν ℓ decays are the only existing Cabibbo- allowed modes forB 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 studiedB 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 $$ \mathrm{\mathcal{B}}\left({\Xi}_c^0\to {\Lambda}^0{\overline{K}}^0, {\Xi}_c^{+}\to {\Xi}^0{\pi}^{+}\right)=\left(8.3\pm 0.9, \ 8.0\pm 4.1\right)\times {10}^{-3}\kern0.5em \mathrm{and}\kern0.5em \mathrm{\mathcal{B}}\left({\Lambda}_c^{+}\to {\Delta}^{++}{\pi}^{-}, {\Xi}_c^0\to {\Omega}^{-}{K}^{+}\right)=\left(5.5\pm 1.3, \kern0.5em 4.8\pm 0.5\right)\times {10}^{-3} $$ . 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 + $$ {\Omega}_{cc}^{+}\to {\Xi}_c^{+}{\overline{K}}^0, {\Xi}_{cc}^{++}\to \left({\Xi}_c^{+}{\pi}^{+}, {\varSigma}_c^{++}{\overline{K}}^0\right), \kern0.5em \mathrm{and}\kern0.5em {\Omega}_{ccc}^{++}\to \left({\Xi}_{cc}^{++}{\overline{K}}^0, {\Omega}_{cc}^{+}{\pi}^{+}, {\Xi}_c^{+}{D}^{+}\right) $$ are the favored Cabibbo-allowed decays, which are accessible to the BESIII and LHCb experiments.