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arXiv · 2001.11492

Numerical resummation at subleading color in the strongly ordered soft gluon limit

Stefan Hoeche·Daniel Reichelt
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Abstract

We present a Monte Carlo approach to soft-gluon resummation at subleading color which can be used to improve existing parton shower algorithms. At the single-emission level, soft-collinear enhancements of the splitting functions are explicitly linked to quadratic Casimir operators, while wide angle single-soft enhancements are connected to nontrivial color correlators. We focus on a numerically stable implementation of color matrix element corrections to all orders and approximate the virtual corrections by requiring unitarity at the single-emission level. We provide a proof-of-concept implementation to compute nonglobal event shapes at lepton colliders.

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Stefan Hoeche, Daniel Reichelt. 2020-01-30. Numerical resummation at subleading color in the strongly ordered soft gluon limit. https://doi.org/10.1103/physrevd.104.034006

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