|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Theoretical analysis of the leptonic decays B→ℓℓℓ¯νℓ: Identical leptons in the final stateстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 13 июля 2022 г.
- Авторы: Ivanov Mikhail A., Melikhov Dmitri
- Журнал: Physical Review D
- Том: 105
- Номер: 9
- Год издания: 2022
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 1
- Номер статьи: 094038
- DOI: 10.1103/PhysRevD.105.094038
- Аннотация: We study the effects of identical leptons in the final state of the B+→ℓ+ℓ−ℓ+¯νℓ decay. The amplitude of the process is described by the same form factors as the amplitude of the B→ℓℓℓ′¯ν′ℓ decay for nonidentical leptons in the final state. However, the differential distributions are strongly different, as the B+→ℓ+ℓ−ℓ+¯νℓ amplitude contains both the direct (Ma) and exchange (Mb) diagrams. We calculate a number of the differential distributions. In particular, we propose an interesting observable that can be readily measured experimentally: the differential distribution over the invariant mass of the pair of leptons of the same charge, ℓ+ℓ+. The good news is that the interference between Ma and Mb, dBab is found to be at the level of less than 1% in all considered differential distributions and therefore can be neglected in the full kinematical region of this decay.
- Добавил в систему: Мелихов Дмитрий Игоревич