Simultaneous extractions of vertical bar V-ub vertical bar and vertical bar V-cb vertical bar with only the exclusive Lambda(b) decays

摘要

We perform the simultaneous vertical bar V-ub vertical bar and vertical bar V-cb vertical bar extractions with only the exclusive Lambda(b) decays of Lambda(b) - (p, Lambda(+)(c))mu(nu) over bar mu, Lambda(b) - p pi(-) and Lambda(b) - Lambda(+)(c)(pi(-), D-). We obtain that vertical bar V-ub vertical bar = (3.7 +/- 0.3) x 10(-3) and vertical bar V-cb vertical bar = (45.9 +/- 2.7) x 10(-3). Our value of vertical bar V-ub vertical bar is larger than that of (3.27 +/- 0.15 +/- 0.16 +/- 0.06) x 10(-3), previously extracted by the LHC Collaboration from the exclusive Lambda(b) decays also, but nearly identical to (3.72 +/- 0.19) x 10(-3) from the exclusive Bdecays. On the other hand, our extracted result of vertical bar V-cb vertical bar favors the value of (42.2 +/- 0.8) x 10(-3) from the inclusive Bdecays. (C) 2018 The Authors. Published by Elsevier B.V.