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Master Integrals For Double Real Radiation Emission In Heavy-To-Light Quark Decay, Roberto Bonciani, Alessandro Broggio, Leandro Cieri, Andrea Ferroglia
Master Integrals For Double Real Radiation Emission In Heavy-To-Light Quark Decay, Roberto Bonciani, Alessandro Broggio, Leandro Cieri, Andrea Ferroglia
Publications and Research
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 …