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arXiv · 1904.02433

Triple-real contribution to the quark beam function in QCD at next-to-next-to-next-to-leading order

Kirill Melnikov·Robbert Rietkerk·Lorenzo Tancredi·Christopher Wever
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Abstract

We compute the three-loop master integrals required for the calculation of the triple-real contribution to the N$^3$LO quark beam function due to the splitting of a quark into a virtual quark and three collinear gluons, $q \to q^*+ggg$. This provides an important ingredient for the calculation of the leading-color contribution to the quark beam function at N$^3$LO.

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Kirill Melnikov, Robbert Rietkerk, Lorenzo Tancredi, Christopher Wever. 2019-04-04. Triple-real contribution to the quark beam function in QCD at next-to-next-to-next-to-leading order. https://doi.org/10.1007/jhep06(2019)033

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