Off-shell single-top production at NLO matched to parton showers

Autor:	Frederix, Rikkert, Frixione, Stefano, Papanastasiou, Andrew S., Prestel, Stefan, Torrielli, Paolo
Rok vydání:	2016
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP06(2016)027
Popis:	We study the hadroproduction of a $Wb$ pair in association with a light jet, focusing on the dominant $t$-channel contribution and including exactly at the matrix-element level all non-resonant and off-shell effects induced by the finite top-quark width. Our simulations are accurate to the next-to-leading order in QCD, and are matched to the HERWIG6 and PYTHIA8 parton showers through the MC@NLO method. We present phenomenological results relevant to the 8 TeV LHC, and carry out a thorough comparison to the case of on-shell $t$-channel single-top production. We formulate our approach so that it can be applied to the general case of matrix elements that feature coloured intermediate resonances and are matched to parton showers. Comment: 36 pages, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1603.01178 Zobrazit plný text záznamu View this record from Arxiv