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

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. Furthermore, 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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Technische Univ. Munchen, Garching (Germany)
  2. INFN - Sezione di Genova, Genoa (Italy)
  3. Univ. of Cambridge, Cambridge (United Kingdom)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Univ. di Torino and INFN - Sezione di Torino, Turin (Italy)
Publication Date:
OSTI Identifier:
1260837
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 6; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 97 MATHEMATICS AND COMPUTING NLO computations; QCD phenomenology