Massive Loop Amplitudes from Unitarity

Preprint

22 January 1996

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9511336

Abstract

We show, for previously uncalculated examples containing a uniform mass in the loop, that it is possible to obtain complete massive one-loop gauge theory amplitudes solely from unitarity and known ultraviolet or infrared mass singularities. In particular, we calculate four-gluon scattering via massive quark loops in QCD. The contribution of a heavy quark to five-gluon scattering with identical helicities is also presented.

Keywords

PREVIOUSLY UNCALCULATED
GLUON SCATTERING
LOOP AMPLITUDES
MASSIVE LOOP
SCATTERING
UNITARITY
QUARK
QCD

All Related Versions

Version 1, 1995-11-16, ArXiv
Version 2, 1996-01-22, ArXiv
Published version: Nuclear Physics B, 467 (3), 479.

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