scholarly journals Top quark pair production near threshold: single/double distributions and mass determination

2020 ◽  
Vol 2020 (6) ◽  
Author(s):  
Wan-Li Ju ◽  
Guoxing Wang ◽  
Xing Wang ◽  
Xiaofeng Xu ◽  
Yongqi Xu ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Mass Determination ◽  
Near Threshold

scholarly journals Top-quark pair production near threshold at LHC

2009 ◽  
Vol 60 (3) ◽  
pp. 375-386 ◽  
Author(s):  
Y. Kiyo ◽  
J. H. Kühn ◽  
S. Moch ◽  
M. Steinhauser ◽  
P. Uwer
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Near Threshold

scholarly journals Supersymmetric correction to top quark pair production near threshold

2001 ◽  
Vol 510 (1-4) ◽  
pp. 205-210 ◽  
Author(s):  
Shufang Su ◽  
Mark B. Wise
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Near Threshold

scholarly journals Spin Correlations in Top Quark Pair Production Near Threshold at the e + e - Linear Collider

2003 ◽  
Vol 40 (6) ◽  
pp. 687-692 ◽  
Author(s):  
Zhang Qing-Jun ◽  
Li Chong-Sheng ◽  
Liu Jian-Jun ◽  
Jin Li-Gang
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Linear Collider ◽  
Spin Correlations ◽  
Near Threshold

Top-quark pair production near threshold

1993 ◽  
Vol 47 (1) ◽  
pp. 56-81 ◽  
Author(s):  
Y. Sumino ◽  
K. Fujii ◽  
K. Hagiwara ◽  
H. Murayama ◽  
C.-K. Ng
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Near Threshold

scholarly journals NNNLO results on top-quark pair production near threshold

2008 ◽  
Author(s):  
Martin Beneke ◽  
Yuichiro Kiyo ◽  
Kurt Schuller
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Near Threshold

scholarly journals Polarization in top quark pair production near threshold

1995 ◽  
Vol 346 (1-2) ◽  
pp. 137-142 ◽  
Author(s):  
R Harlander ◽  
M Jeżabek ◽  
J.H Kühn ◽  
T Teubner
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Near Threshold

scholarly journals P-wave contribution to third-order top-quark pair production near threshold

2014 ◽  
Vol 880 ◽  
pp. 414-434 ◽  
Author(s):  
M. Beneke ◽  
J. Piclum ◽  
T. Rauh
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
P Wave ◽  
Third Order ◽  
Near Threshold

scholarly journals Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton in pp collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
◽  
G. Aad ◽  
B. Abbott ◽  
D. C. Abbott ◽  
A. Abed Abud ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Production Cross ◽  
Branching Fraction ◽  
Hadron Collider ◽  
Atlas Detector ◽  
Third Generation ◽  
Final State ◽  
Generation Scalar ◽  
Scalar Leptoquarks

Abstract A search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ-lepton is presented. The search is based on a dataset of pp collisions at $$ \sqrt{s} $$ s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb−1. Events are selected if they have one light lepton (electron or muon) and at least one hadronically decaying τ -lepton, or at least two light leptons. In addition, two or more jets, at least one of which must be identified as containing b-hadrons, are required. Six final states, defined by the multiplicity and flavour of lepton candidates, are considered in the analysis. Each of them is split into multiple event categories to simultaneously search for the signal and constrain several leading backgrounds. The signal-rich event categories require at least one hadronically decaying τ-lepton candidate and exploit the presence of energetic final-state objects, which is characteristic of signal events. No significant excess above the Standard Model expectation is observed in any of the considered event categories, and 95% CL upper limits are set on the production cross section as a function of the leptoquark mass, for different assumptions about the branching fractions into tτ and bν. Scalar leptoquarks decaying exclusively into tτ are excluded up to masses of 1.43 TeV while, for a branching fraction of 50% into tτ, the lower mass limit is 1.22 TeV.

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