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arXiv · 1608.07982

A massive momentum-subtraction scheme

Peter Boyle·Luigi Del Debbio·Ava Khamseh
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Abstract

We introduce a new massive renormalization scheme, denoted mSMOM, as a modification of the existing RI/SMOM scheme. We use SMOM for defining renormalized fermion bilinears in QCD at non-vanishing fermion mass. This scheme has properties similar to those of the SMOM scheme, such as the use of non-exceptional symmetric momenta, while in contrast to SMOM, it defines the renormalized fields away from the chiral limit. Here we discuss some of the properties of mSMOM, and present non-perturbative arguments for deriving some renormalization constants. The results of a 1-loop calculation in dimensional regularization are briefly summarised to illustrate some properties of the scheme.

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Peter Boyle, Luigi Del Debbio, Ava Khamseh. 2016-08-29. A massive momentum-subtraction scheme. https://arxiv.org/abs/1608.07982

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