On the four-quark operator matrix elements for the lifetime of $$\Lambda _{b}$$ Λ b

Abstract Heavy quark expansion can nicely explain the lifetime of $$\Lambda _{b}$$ Λ b . However, there still exist sizable uncertainties from the four-quark operator matrix elements of $$\Lambda _{b}$$ Λ b in $$1/m_{b}^{3}$$ 1 / m b 3 corrections, which describe the spectator effects. In this work,...

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Бібліографічні деталі
Автори: Zhen-Xing Zhao, Xiao-Yu Sun, Fu-Wei Zhang, Zhi-Peng Xing
Формат: Стаття
Мова:English
Опубліковано: SpringerOpen 2024-01-01
Серія:European Physical Journal C: Particles and Fields
Онлайн доступ:https://doi.org/10.1140/epjc/s10052-023-12299-9