TTP20-026 Penguin contribution to width difference and CP asymmetry in \bbq\ mixing at order $\alpha_s^2 N_f$
TTP20-026 Penguin contribution to width difference and CP asymmetry in \bbq\ mixing at order $\alpha_s^2 N_f$
Hrachia M. Asatrian, Hrachya H. Asatryan, Artyom Hovhannisyan, Ulrich Nierste, Sergey Tumasyan, Arsen Yeghiazaryan
Phys. Rev. D 102, 033007 (2020)
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arXiv