New physics in inclusive B -> X-c l(v)over-bar decay in light of R(D-(*)) measurements

作者：Kamali Saeed^*; Rashed Ahmed^*; Datta Alakabha^*

来源：PHYSICAL REVIEW D, 2018, 97(9): 095034.

DOI：10.1103/PhysRevD.97.095034

In this work we study the effects of new-physics (NP) operators with different Lorentz structures on the inclusive B -> X-c tau(v) over bar and make predictions for the ratio of total decay rates R(X-c) Gamma(B -> X-c tau(v) over bar (tau))/Gamma(B -> X(c)l (v) over bar (l)) with l = e, mu, the differential decay rates, d Gamma/dq(2) and d Gamma/dE(tau), forward-backward asymmetry A(FB) and the ratio of the differential decay rates B(q(2)) = d Gamma(B -> x(c)tau(v) over bar tau)/dq(2)/d Gamma(B -> x(c)l (v) over barl)/dq(2). In addition, we introduce some leptoquark models as explicit models of the NP operators and study their effects on the inclusive decay. We consider O(alpha(s)) radiative and 1/mb nonperturbative corrections to the Standard Model (SM) decay rate and ignore their small effects in the NP contributions.

• 出版日期2018-5-25