Two-loop QCD corrections to semileptonic b decays at an intermediate recoil
Abstract
We present complete O(alphas2) corrections to the decay b-->c+l+nu at the point where the invariant mass of the leptons sqrtq2 equals the c quark mass. We use this result, together with previously obtained corrections at the ends of the q2 spectrum, to estimate the total width of the semileptonic b-->c decay with O(alphas2) accuracy, essential for the |Vcb| determination.
0
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.