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arXiv · 1809.06300

Double-real contribution to the quark beam function at N$^{3}$LO QCD

Kirill Melnikov·Robbert Rietkerk·Lorenzo Tancredi·Christopher Wever
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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 next-to-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.

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Kirill Melnikov, Robbert Rietkerk, Lorenzo Tancredi, Christopher Wever. 2018-09-17. Double-real contribution to the quark beam function at N$^{3}$LO QCD. https://doi.org/10.1007/jhep02(2019)159

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