Three loop calculations and inclusive Vcb
Marzia Bordone, Bernat Capdevila, Paolo Gambino
Abstract
We discuss the impact of the recent O(αs3) calculations of the semileptonic width of the b quark and of the relation between pole and kinetic heavy quark masses by Fael et al. on the inclusive determination of |Vcb|. The most notable effect is a reduction of the uncertainty. Our final result is |Vcb|=42.16(51)10−3.
Topics & Concepts
PhysicsParticle physicsLoop (graph theory)QuarkSemileptonic decayNuclear physicsBottom quarkReduction (mathematics)Top quarkCombinatoricsLeptonGeometryMathematicsElectronParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsBlack Holes and Theoretical Physics