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 Iqq (t, z) of the quark beam function.
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Melnikov, K., Rietkerk, R., Tancredi, L. et al. Double-real contribution to the quark beam function at N3LO QCD. J. High Energ. Phys. 2019, 159 (2019). https://doi.org/10.1007/JHEP02(2019)159
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DOI: https://doi.org/10.1007/JHEP02(2019)159