Publications and Research
Document Type
Article
Publication Date
2018
Abstract
We evaluate analytically the master integrals for double real radiation emission in the b → uW* decay, where b and u are a massive and massless quark, respectively, while W* is an off-shell charged weak boson. Since the W boson can subsequently decay in a lepton anti-neutrino pair, the results of the present paper constitute a further step toward a fully analytic computation of differential distributions for the semileptonic decay of a b quark at NNLO in QCD. The latter partonic process plays a crucial role in the study of inclusive semileptonic charmless decays of B mesons. Our results are expressed in terms of multiple polylogarithms of maximum weight four.
Comments
This article was originally published in European Physical Journal C, available at https://doi.org/10.1140/epjc/s10052-018-6157-6
This work is distributed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).