First Observation of the Rare Purely Baryonic Decay B0→pp¯

Авторы: Бережной А.В., Горелов И.В., Лефлат А.К., Никитин Н.В., Саврина Д.В., Волков В.Ю., Жуков В.Ю., LHCb Collaboration
Журнал: Physical Review Letters
Том: 119
Номер: 23
Год издания: 2017
Издательство: American Physical Society
Местоположение издательства: United States
DOI: 10.1103/physrevlett.119.232001
Аннотация: The first observation of the decay of a B0 meson to a purely baryonic final state, B0→pp¯, is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3.0 fb-1. The branching fraction is determined to be B(B0→pp¯)=(1.25±0.27±0.18)×10-8, where the first uncertainty is statistical and the second systematic. The decay mode B0→pp¯ is the rarest decay of the B0 meson observed to date. The decay Bs0→pp¯ is also investigated. No signal is seen and the upper limit B(Bs0→pp¯)<1.5×10-8 at 90% confidence level is set on the branching fraction.
Добавил в систему: Бережной Александр Викторович

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ЦЭМИ РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА