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Heavy quark 1/m(Q) contributions in semileptonic B decays to orbitally excited D mesons - art. no. 014061статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 14 сентября 2017 г.
- Авторы: Ebert D., Faustov R.N., Galkin V.O.
- Журнал: Physical Review D
- Том: 61
- Номер: 1
- Год издания: 2000
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 014016
- DOI: 10.1103/PhysRevD.61.014016
- Аннотация: Exclusive semileptonic decays of B mesons to orbitally excited D mesons are considered beyond the infinitely heavy quark limit in the framework of the relativistic quark model based on the quasipotential approach. This model agrees with the structure of heavy quark mass corrections predicted by the heavy quark effective theory and allows the determination of corresponding leading and subleading Isgur-Wise functions. It is found that both relativistic and 1/m(Q) contributions significantly influence the decay rates. Thus, relativistic transformations of the meson wave functions (Wigner rotation of the light quark spin) already contribute at leading order of heavy quark expansion and result in a suppression of B-->D(0)(*)e nu and B-->D(1)(*)e nu decay rates. On the other hand, the vanishing of the decay matrix elements at zero recoil of a final D** meson in the infinitely heavy quark mass limit makes the 1/m(Q) corrections very important, and their account results in a substantial enhancement of B-->D(1)e nu and B-D(0)(*)e nu.
- Добавил в систему: Галкин Владимир Олегович