Results 1 to 10 of about 133,991 (238)

Measurement of the top quark mass using single top quark events in proton-proton collisions at $$\sqrt{s}= 8$$ s = 8  TeV [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
A measurement of the top quark mass is reported in events containing a single top quark produced via the electroweak t channel. The analysis is performed using data from proton-proton collisions collected with the CMS detector at the LHC at a centre-of ...
A. M. Sirunyan   +2230 more
doaj   +2 more sources

Top Quark Asymmetries

open access: yesUniverse, 2022
The production of top quark pairs (tt¯) via the quark-antiquark initial state is not symmetric under the exchange of top quark and antiquark. Calculations of this next-to-leading order effect predict asymmetries of about one to a few percent, depending ...
Thorsten Chwalek, Frédéric Déliot
doaj   +5 more sources

Fiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
Detailed measurements of t-channel single top-quark production are presented. They use 20.2 fb $$^{-1}$$ - 1 of data collected by the ATLAS experiment in proton–proton collisions at a centre-of-mass energy of 8 TeV at the LHC.
M. Aaboud   +2852 more
doaj   +2 more sources

Single-Top Quark Physics at the LHC: From Precision Measurements to Rare Processes and Top Quark Properties

open access: yesUniverse, 2023
Since the initial measurements of single-top quark production at the Tevatron in 2009, tremendous progress has been made at the LHC. While LHC Run 1 marked the beginning of a precision era for the single-top quark measurements in some of the main ...
Jérémy Andrea, Nicolas Chanon
doaj   +1 more source

Loop induced top quark FCNC through top quark and dark matter interactions

open access: yesPhysics Letters B, 2022
We present a comprehensive analysis of the loop induced top quark FCNC signals at the LHC within one class of the simplified model. The loop level FCNC interactions are well motivated to avoid the hierarchy of the top quark couplings from the new physics
Yandong Liu, Bin Yan, Rui Zhang
doaj   +1 more source

Investigation of the scale dependence in the MSR and MS ¯ $$ \overline{\textrm{MS}} $$ top quark mass schemes for the t t ¯ $$ \textrm{t}\overline{\textrm{t}} $$ invariant mass differential cross section using LHC data

open access: yesJournal of High Energy Physics, 2023
The computation of the single-differential top quark-antiquark pair ( t t ¯ $$ \textrm{t}\overline{\textrm{t}} $$ ) production cross section at NLO in the fixed-order expansion is examined consistently using the MSR and MS ¯ $$ \overline{\textrm{MS ...
Toni Mäkelä   +3 more
doaj   +1 more source

The top quark width constrains from the single top quark production channel. [PDF]

open access: yesEPJ Web of Conferences, 2019
Using model independent and gauge invariant method proposed in previous studies we provide estimations on the top quark width measurement from the single top quark production channel and discuss the results of combining measurements from single and pair ...
Baskakov Alexey, Boos Eduard, Dudko Lev
doaj   +1 more source

Measurement of the tt¯ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at s=13 TeV

open access: yesPhysics Letters B, 2023
The measurement of the charge asymmetry in top quark pair events with highly Lorentz-boosted top quarks decaying to a single lepton and jets is presented.
A. Tumasyan   +2358 more
doaj   +1 more source

Top quark decays into heavy quark mesons [PDF]

open access: yesPhysical Review D, 1996
For top quark decays into heavy quark mesons $ $ and $\bar{B}_c^*$ , a complete calculation to the leading order both in QCD coupling constant $ _s$ and in $v$, the typical velocity of the heavy quarks inside the mesons, is performed. Relatons between the top quark mass and the decay branching ratios are studied.
Qiao, Cong-Feng   +2 more
openaire   +3 more sources

Boosted top quark polarization [PDF]

open access: yesPhysical Review D, 2019
In top quark production, the polarization of top quarks, decided by the chiral structure of couplings, is likely to be modified in the presence of any new physics contribution to the production. Hence the same is a good discriminator for those new physics models wherein the couplings have a chiral structure different than that in the Standard Model (SM)
Godbole, Rohini   +5 more
openaire   +3 more sources

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