Nonleptonic two-body decays of single heavy baryons ΛQ, ΞQ, and ΩQ (Q=b, c) induced by W emission in the covariant confined quark model; Physical Review D; Vol. 98, iss. 7

Nonleptonic two-body decays of single heavy baryons ΛQ, ΞQ, and ΩQ (Q=b, c) induced by W emission in the covariant confined quark model; Physical Review D; Vol. 98, iss. 7

Detalhes bibliográficos
Parent link:Physical Review D: covering particles, fields, gravitation, and cosmology
Vol. 98, iss. 7.— 2018.— [074011, 21 p.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Outros Autores: Gutsche Th. Thomas, Ivanov M. A. Mikhail Alekseevich, Korner J. C. Jurgen, Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich
Resumo:Title screen
We have made a survey of heavy-to-heavy and heavy-to-light nonleptonic heavy baryon two-body decays and have identified those decays that proceed solely via W-boson emission, i.e., via the tree graph contribution. Some sample decays are Ω−b→Ω(*)0cρ−(π−), Ω−b→Ω−J/ψ(ηc), Ξ0,−b→Ξ0,−J/ψ(ηc), Λb→ΛJ/ψ(ηc), Λb→ΛcD(*)s, Ω0c→Ω−ρ+(π+), and Λc→pϕ. We make use of the covariant confined quark model previously developed by us to calculate the tree graph contributions to these decays. We calculate rates, branching fractions and, for some of these decays, decay asymmetry parameters. We compare our results to experimental findings and the results of other theoretical approaches when they are available. Our main focus is on decays to final states with a lepton pair because of their clean experimental signature. For these decays we discuss two-fold polar angle decay distributions such as in the cascade decay Ω−b→Ω−(→Ξπ,ΛK−)+J/ψ(→ℓ+ℓ−). Lepton mass effects are always included in our analysis.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglês
Publicado em: 2018
Assuntos:
электронный ресурс
труды учёных ТПУ
нелептонные распады
барионы
ковариантность
Acesso em linha:https://doi.org/10.1103/PhysRevD.98.074011
Formato: Recurso Eletrônico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660048

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