Infrared singularities in one-loop amplitudes
M. Assadsolimani, S. Becker, Ch. Reuschle, S. Weinzierl
TL;DR
This paper introduces a numerical method for handling infrared singularities in one-loop QCD amplitudes, providing a local subtraction formula to improve computational efficiency.
Contribution
It presents a new simple formula for local infrared subtraction in one-loop amplitudes, enhancing numerical NLO calculations in QCD.
Findings
Provides a local infrared subtraction term for one-loop integrand
Discusses local ultraviolet subtraction and contour deformation
Facilitates more efficient numerical NLO QCD computations
Abstract
In this talk we discuss a purely numerical approach to next-to-leading order calculations in QCD. We present a simple formula, which provides a local infrared subtraction term for the integrand of a one-loop amplitude. In addition we briefly comment on local ultraviolet subtraction terms and on the required deformation of the contour of integration.
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