PoS - Proceedings of Science
Volume 397 - The Ninth Annual Conference on Large Hadron Collider Physics (LHCP2021) - Poster Session
Colour and logarithmic accuracy in final-state parton showers
R. Medves
Full text: pdf
Pre-published on: October 20, 2021
Published on: November 17, 2021
Standard final-state dipole showers are typically derived within an approximation of a large number of colours. Efficient and widely used algorithms in the literature to go beyond this approximation
are known to yield incorrect sub-leading colour contributions for a variety of observables at leading logarithmic accuracy. In this review we introduce two new algorithms, which are based on colour coherence, that allow showers to correctly account for the full colour structure of global observables at next-to-leading logarithmic accuracy. One of the two introduced schemes also enables showers to reproduce the correct full-colour matrix element for any number of
commensurate-angle energy-ordered pairs of emissions.
DOI: https://doi.org/10.22323/1.397.0226
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