Non-Spectator Diquark Effects on Lifetimes of Λ_b, Ω_{b}^{(*)} and Weak Decay Rates of Σ_{b}^{(*)}, Ξ_{b}^{(*)}

Non-Spectator Diquark Effects on Lifetimes of Λ_b, Ω_{b}^{()} and Weak Decay Rates of Σ_{b}^{()}, Ξ_{b}^{(*)}

dc.creator	Dai, Wu-Sheng
dc.creator	Guo, Xin-Heng
dc.creator	Li, Xue-Qian
dc.creator	Zhao, Gang
dc.date	1999-02-22
dc.date.accessioned	2026-07-07T04:06:28Z
dc.date.available	2026-07-07T04:06:28Z
dc.description	The difference of τ_{_B} and τ_{_{Λ_b}} indicates the role of the light flavors. We calculate the lifetimes of B-meson and Λ_b based on the weak effective Hamiltonian while assuming the heavy baryon is constructed by a heavy b-quark and a diquark containing two light quarks. In this scenario, we use the information of the measured ratio τ_{_{Λ_b}}/τ_{_B} as input to predict rates of the inclusive weak decays of Σ_{b}^{()} and Ξ_{b}^{()} into non-bottom final states. We find that these rates of Σ_{b}^{()} and Ξ_{b}^{()} are much larger than that of B-mesons and Λ_b. We also give the predictions for the lifetimes of Ω_b and Ω_{b}^{*}. Phenomenological implication of our result is discussed.
dc.description	19 pages, Latex
dc.identifier	https://arxiv.org/abs/hep-ph/9902421
dc.identifier	http://arxiv.org/abs/hep-ph/9902421
dc.identifier	Commun.Theor.Phys. 35 (2001) 50-56
dc.identifier.uri	http://salesiana.dossiersoluciones.com/handle/123456789/48784
dc.subject	High Energy Physics - Phenomenology
dc.title	Non-Spectator Diquark Effects on Lifetimes of Λ_b, Ω_{b}^{()} and Weak Decay Rates of Σ_{b}^{()}, Ξ_{b}^{(*)}
dc.type	text