Unitarity methods for Mellin moments of Drell-Yan cross sections
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Publication:1638672
DOI10.1007/JHEP05(2016)079zbMATH Open1388.81959arXiv1603.05252OpenAlexW3104336509MaRDI QIDQ1638672
Author name not available (Why is that?)
Publication date: 12 June 2018
Published in: (Search for Journal in Brave)
Abstract: We develop a method for computing Mellin moments of single inclusive cross sections such as Drell-Yan production directly from forward scattering diagrams, by invoking unitarity in the form of cutting equations. We provide a diagram-independent prescription for eliminating contributions from unwanted cuts at the level of an expansion in the reciprocal omega=1/z variable. The modified sum over powers of omega produces the result from physical cuts only, with the nth coefficient precisely equal to the nth Mellin moment of the cross section. We demonstrate and validate our method for representative one- and two-loop diagrams.
Full work available at URL: https://arxiv.org/abs/1603.05252
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