scholarly journals Top quark pair production in association with aZ-boson at next-to-leading-order accuracy

2012 ◽  
Vol 85 (5) ◽  
Author(s):  
A. Kardos ◽  
Z. Trócsányi ◽  
C. G. Papadopoulos
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Leading Order ◽  
Order Accuracy

scholarly journals Next-to-leading order QCD predictions for top-quark pair production with up to two jets merged with a parton shower

2015 ◽  
Vol 748 ◽  
pp. 74-78 ◽  
Author(s):  
Stefan Höche ◽  
Frank Krauss ◽  
Philipp Maierhöfer ◽  
Stefano Pozzorini ◽  
Marek Schönherr ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Parton Shower ◽  
Leading Order ◽  
Two Jets

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

2017 ◽  
Vol 77 (3) ◽  
Author(s):  
S. Höche ◽  
P. Maierhöfer ◽  
N. Moretti ◽  
S. Pozzorini ◽  
F. Siegert
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Leading Order

scholarly journals TOP QUARK PAIR PRODUCTION AND DECAY INCLUDING SPIN EFFECTS AT HADRON COLLIDERS: PREDICTIONS AT NLO QCD

2003 ◽  
Vol 18 (08) ◽  
pp. 1357-1364 ◽  
Author(s):  
W. BERNREUTHER ◽  
A. BRANDENBURG ◽  
Z. G. SI ◽  
P. UWER
Keyword(s):  
Angular Distribution ◽  
Pair Production ◽  
Top Quark ◽  
Leading Order ◽  
Hadron Colliders ◽  
Tevatron Collider ◽  
Spin Effects ◽  
Quark Flavor ◽  
Future Data ◽  
Hadronic Production

Top quark-antiquark [Formula: see text] pairs will be produced copiously at the Tevatron collider and in huge numbers at the LHC. This will make possible detailed investigations of the properties and interactions of this quark flavor. The analysis and interpretation of future data requires precise predictions of the hadronic production of [Formula: see text] pairs and of their subsequent decays. In this talk the reactions [Formula: see text], [Formula: see text] are considered and results are presented of our calculation6 of the dilepton angular distribution at next-to-leading order QCD, keeping the full dependence on the spins of the intermediate [Formula: see text] state. The angular distribution is determined for different choices of reference axes that can be identified with the t and [Formula: see text] spin axes. While the QCD corrections to the leading-order distribution turn out to be small in the case of the LHC, we find them to be sizeable in the case of the Tevatron and find, moreover, the angular distribution to be sensitive to the parton content of the proton.

scholarly journals Signature of same-sign top pair production mediated by a nonuniversalZ′with QCD next-to-leading order accuracy at the LHC

2012 ◽  
Vol 86 (11) ◽  
Author(s):  
Bo Hua Li ◽  
Chong Sheng Li ◽  
Hai Tao Li ◽  
Yong Chuan Zhan ◽  
Yue Zhang ◽  
...  
Keyword(s):  
Pair Production ◽  
Leading Order ◽  
Order Accuracy ◽  
Top Pair Production

scholarly journals Next-to-Next-to-Leading Order Event Generation for Top-Quark Pair Production

2021 ◽  
Vol 127 (6) ◽  
Author(s):  
Javier Mazzitelli ◽  
Pier Francesco Monni ◽  
Paolo Nason ◽  
Emanuele Re ◽  
Marius Wiesemann ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Leading Order ◽  
Event Generation

scholarly journals Parton showers and matching uncertainties in top quark pair production with Herwig 7

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Kyle Cormier ◽  
Simon Plätzer ◽  
Christian Reuschle ◽  
Peter Richardson ◽  
Stephen Webster
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Hadron Collider ◽  
Event Generator ◽  
Leading Order ◽  
Large Hadron Collider Data ◽  
Quark Decays ◽  
Depth Study ◽  
Matching Schemes ◽  
Hadronic Collisions

Abstract We evaluate the theoretical uncertainties in next-to-leading order plus parton shower predictions for top quark pair production and decay in hadronic collisions. Our work is carried out using the Herwig  7 event generator and presents an in-depth study of variations in matching schemes with two systematically different shower algorithms, the traditional angular-ordered and alternative dipole shower. We also present all of the required extensions of the Herwig dipole shower algorithm to properly take into account quark mass effects, as well as its ability to perform top quark decays. The predictions are compared at parton level as well as to Large Hadron Collider data, including in the boosted regime. We find that the regions where predictions with a non-top-quark-specific tune differ drastically from data are plagued by large uncertainties which are consistent between our two shower and matching algorithms.

scholarly journals Hadronic top-quark pair production in association with two jets at next-to-leading order QCD

2011 ◽  
Vol 84 (11) ◽  
Author(s):  
G. Bevilacqua ◽  
M. Czakon ◽  
C. G. Papadopoulos ◽  
M. Worek
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Leading Order ◽  
Two Jets

scholarly journals Top-quark pair production at next-to-next-to-leading order QCD in electron positron collisions

2016 ◽  
Vol 2016 (12) ◽  
Author(s):  
Long Chen ◽  
Oliver Dekkers ◽  
Dennis Heisler ◽  
Werner Bernreuther ◽  
Zong-Guo Si
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Leading Order ◽  
Electron Positron ◽  
Positron Collisions
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