English

Three loop calculations and inclusive $V_{cb}$

High Energy Physics - Phenomenology 2021-10-04 v2

Abstract

We discuss the impact of the recent O(αs3)\mathcal{O}(\alpha_s^3) calculations of the semileptonic width of the bb quark and of the relation between pole and kinetic heavy quark masses by Fael et al. on the inclusive determination of Vcb|V_{cb}|. The most notable effect is a reduction of the uncertainty. Our final result is Vcb=42.16(51)103|V_{cb}|=42.16(51)\, 10^{-3}.

Cite

@article{arxiv.2107.00604,
  title  = {Three loop calculations and inclusive $V_{cb}$},
  author = {Marzia Bordone and Bernat Capdevila and Paolo Gambino},
  journal= {arXiv preprint arXiv:2107.00604},
  year   = {2021}
}

Comments

6 pages, 1 figure

R2 v1 2026-06-24T03:48:57.144Z