Results 1 to 10 of about 3,326 (135)

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

Polarization of top quark in vector-like quark decay

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2019
Vector-like quarks (VLQs) are attractive extensions to the Standard Model. They mix with the SM quarks and can lead to rich phenomenology. Determination of VLQ's interaction structure with the SM is then an important issue, which can be inferred from the
Hang Zhou
exaly   +3 more sources

Properties of the Top Quark

open access: yesUniverse
Recent measurements of the properties of the top quark at the CERN Large Hadron Collider are discussed. The results were measured for single and top quark pair production in their final states, including jets with either one or two leptons or only in ...
Andreas Jung
exaly   +3 more sources

Collider sensitivity to SMEFT heavy-quark operators at one-loop in top-quark processes

open access: yesJournal of High Energy Physics
We study the effects of four-heavy-quark operators in the production of top quarks in the framework of the Standard Model Effective Field Theory (SMEFT) at the LHC. In particular, we compute for the first time the total contribution of the four-top-quark
Rogerio Rosenfeld   +2 more
exaly   +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   +1 more source

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

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