We present a next-to-leading order accurate simulation of t-channel single-top plus jet production matched to parton showers via the POWHEG method. The calculation underlying the simulation is enhanced with a process-specific implementation of the multi-scale improved NLO (MINLO) method, such that it gives physical predictions all through phase space, including regions where the jet additional to the t-channel single-top process is unresolved. We further describe a tuning procedure for the MINLO Sudakov form factor, fitting the coefficient of the first subleading term in its exponent using an artificial neural-network. The latter tuning, implemented as a straightforward event-by-event reweighting, renders the MINLO simulation NLO accurate for t-channel single-top observables, in addition to those of the analogous single-top plus jet process.
@article{arxiv.1805.09855,
title = {MINLO t-channel single-top plus jet},
author = {Stefano Carrazza and Rikkert Frederix and Keith Hamilton and Giulia Zanderighi},
journal= {arXiv preprint arXiv:1805.09855},
year = {2018}
}
Comments
39 pages, 10 figures; v2: minor changes, version accepted for publication in JHEP