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Title: Next-to-leading order QCD predictions for top-quark pair production with up to three jets

Abstract

Here, we present theoretical predictions for the production of top-quark pairs with up to three jets at the next-to leading order in perturbative QCD. The relevant calculations are performed with Sherpa and OpenLoops. In order to address the issue of scale choices and related uncertainties in the presence of multiple scales, we compare results obtained with the standard scale HT/2HT/2 at fixed order and the MiNLO procedure. By analyzing various cross sections and distributions for t$$\bar{t}$$+0,1,2,3 jets at the 13 TeV LHC we found a remarkable overall agreement between fixed-order and MiNLO results. The differences are typically below the respective factor-two scale variations, suggesting that for all considered jet multiplicities missing higher-order effects should not exceed the ten percent level.

Authors:
 [1];  [2];  [3];  [3];  [4]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Albert Ludwigs Univ. of Freiburg (Germany). Inst. of Physics
  3. Univ. of Zurich (Switzerland). Inst. of Physics
  4. Dresden Univ. of Technology (Germany). Inst. of Nuclear and Particle Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
OSTI Identifier:
1345865
Alternate Identifier(s):
OSTI ID: 1361072
Grant/Contract Number:  
AC02-76SF00515; AC02- 05CH11231; NSF PHY11-25915; PITN-GA-2012-316704; SI 2009/1-1; BSCGI0-157722; PP00P2-153027
Resource Type:
Journal Article: Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 3; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Höche, S., Maierhöfer, P., Moretti, N., Pozzorini, S., and Siegert, F. Next-to-leading order QCD predictions for top-quark pair production with up to three jets. United States: N. p., 2017. Web. doi:10.1140/epjc/s10052-017-4715-y.
Höche, S., Maierhöfer, P., Moretti, N., Pozzorini, S., & Siegert, F. Next-to-leading order QCD predictions for top-quark pair production with up to three jets. United States. doi:10.1140/epjc/s10052-017-4715-y.
Höche, S., Maierhöfer, P., Moretti, N., Pozzorini, S., and Siegert, F. Tue . "Next-to-leading order QCD predictions for top-quark pair production with up to three jets". United States. doi:10.1140/epjc/s10052-017-4715-y.
@article{osti_1345865,
title = {Next-to-leading order QCD predictions for top-quark pair production with up to three jets},
author = {Höche, S. and Maierhöfer, P. and Moretti, N. and Pozzorini, S. and Siegert, F.},
abstractNote = {Here, we present theoretical predictions for the production of top-quark pairs with up to three jets at the next-to leading order in perturbative QCD. The relevant calculations are performed with Sherpa and OpenLoops. In order to address the issue of scale choices and related uncertainties in the presence of multiple scales, we compare results obtained with the standard scale HT/2HT/2 at fixed order and the MiNLO procedure. By analyzing various cross sections and distributions for t$\bar{t}$+0,1,2,3 jets at the 13 TeV LHC we found a remarkable overall agreement between fixed-order and MiNLO results. The differences are typically below the respective factor-two scale variations, suggesting that for all considered jet multiplicities missing higher-order effects should not exceed the ten percent level.},
doi = {10.1140/epjc/s10052-017-4715-y},
journal = {European Physical Journal. C, Particles and Fields},
number = 3,
volume = 77,
place = {United States},
year = {Tue Mar 07 00:00:00 EST 2017},
month = {Tue Mar 07 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1140/epjc/s10052-017-4715-y

Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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