Calculating off-shell one-loop amplitudes for $k_T$-dependent factorization: a proof of concept

Abstract

A method to define and calculate one-loop amplitudes with an off-shell space-like, or $k_T$-dependent, gluon is presented. It introduces a practical regularization to deal with the divergencies that appear due to linear denominators, and can be applied to arbitarary partonic scattering processes.

50 pages, minor corrections

References in corpus (5)

• A Numerical Unitarity Formalism for Evaluating One-Loop Amplitudes
• CGC factorization for forward particle production in proton-nucleus collisions at next-to-leading order
• On the implementation of NLO high energy factorization in single inclusive forward hadron production
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Cited by in corpus (3)

• Prospects for quarkonium studies at the high-luminosity LHC
• Transverse Momentum Dependent Gluon Distribution within High Energy Factorization at Next-to-Leading Order
• One-loop amplitudes with an off-shell gluon