Double-real contribution to the quark beam function at N3LO QCD

Abstract

Abstract We compute the master integrals required for the calculation of the double-real emission contributions to the matching coefficients of 0-jettiness beam functions at nextto-next-to-next-to-leading order in perturbative QCD. As an application, we combine these integrals and derive the double-real gluon emission contribution to the matching coefficient I qq (t, z) of the quark beam function.

Keywords

• NLO Computations
• QCD Phenomenology