Results 41 to 50 of about 2,599,225 (293)

On the ATLAS top mass measurements and the potential for stealth stop contamination

open access: yesJournal of High Energy Physics, 2020
The discovery of the stop — the Supersymmetric partner of the top quark — is a key goal of the physics program enabled by the Large Hadron Collider. Although much of the accessible parameter space has already been probed, all current searches assume the ...
Timothy Cohen   +3 more
doaj   +1 more source

Top quark physics with the CMS experiment

open access: yesEPJ Web of Conferences, 2014
An overview of recent top quark measurements in proton-proton collisions at √s = 7 and 8 TeV in data collected with the CMS experiment at the LHC, using a data sample collected during the years 2011 and 2012 is presented.
Cuevas Javier
doaj   +1 more source

Cross section measurement of t-channel single top quark production in pp collisions at s=13TeV

open access: yesPhysics Letters B, 2017
The cross section for the production of single top quarks in the t channel is measured in proton–proton collisions at 13TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.2fb−1.
A.M. Sirunyan, A. Tumasyan
doaj   +1 more source

Six top messages of new physics at the LHC [PDF]

open access: yesJournal of High Energy Physics, 2018
Six top signatures provide a novel probe of new physics. We discuss production of six top quarks as the decay products of a pair of top partners in the setting of a composite Higgs model, and argue that the six top signal may generically provide one of ...
Huayong Han   +5 more
semanticscholar   +1 more source

Search for standard model production of four top quarks in proton–proton collisions at s=13 TeV

open access: yesPhysics Letters B, 2017
A search for events containing four top quarks (tt¯tt¯) is reported from proton–proton collisions recorded by the CMS experiment at s=13 TeV and corresponding to an integrated luminosity of 2.6 fb−1. The analysis considers the single-lepton (e or μ)+jets
A.M. Sirunyan, A. Tumasyan
doaj   +1 more source

Measurement of the mass difference between top quark and antiquark in pp collisions at s=8 TeV

open access: yesPhysics Letters B, 2017
The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (Δmt=mt−mt‾) that are produced in
S. Chatrchyan   +3 more
doaj   +1 more source

Measurements of tt¯ cross sections in association with b jets and inclusive jets and their ratio using dilepton final states in pp collisions at s=13TeV

open access: yesPhysics Letters B, 2018
The cross sections for the production of tt¯bb¯ and tt¯jj events and their ratio σtt¯bb¯/σtt¯jj are measured using data corresponding to an integrated luminosity of 2.3 fb−1collected in pp collisions at s=13 TeV with the CMS detector at the LHC.
A.M. Sirunyan, A. Tumasyan
doaj   +1 more source

Effective field theory for top physics [PDF]

open access: yes, 2012
We study the top forward-backward asymmetry (FBA $\equiv A_{\rm FB}$) reported by CDF and D0 Collaborations in the effective lagrangian approach. Using dimension-6 effective largrangians for $q \bar{q} \rightarrow t \bar{t}$, we study the $t\bar{t ...
P. Ko
semanticscholar   +1 more source

Search for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2020
A search is presented for additional scalar (H) or pseudoscalar (A) Higgs bosons decaying to a top quark pair in proton-proton collisions at a center-of-mass energy of 13 TeV.
The CMS collaboration   +2342 more
doaj   +1 more source

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