Neutrino masses, vacuum stability and quantum gravity prediction for the mass of the top quark
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2021)180
Abstract: A general prediction from asymptotically safe quantum gravity is the approximate vanishing of all quartic scalar couplings at the UV fixed point beyond the Planck scale. A vanishing Higgs doublet quartic coupling near the Planck… read more here.
Keywords: top quark; mass; prediction; quantum gravity ... See more keywords
Real corrections to Higgs boson pair production at NNLO in the large top quark mass limit
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2022)049
Abstract: In this paper we consider the next-to-next-to-leading order total cross section of Higgs boson pair production in the large top quark mass limit and compute four expansion terms in 1 / m t 2 $$… read more here.
Keywords: top quark; boson pair; large top; pair production ... See more keywords
Measurements of charge and CP asymmetries in b-hadron decays using top-quark events collected by the ATLAS detector in pp collisions at √{s}=8 TeV
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2017)071
Abstract: Same- and opposite-sign charge asymmetries are measured in lepton+jets $t\bar{t}$ events in which a $b$-hadron decays semileptonically to a soft muon, using data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ from proton--proton collisions at… read more here.
Keywords: collected atlas; charge; atlas detector; hadron decays ... See more keywords
Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2019)082
Abstract: A bstractA search for the pair production of heavy fermionic partners of the top quark with charge 5/3 (X5/3) is performed in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector… read more here.
Keywords: top quark; proton proton; single lepton; final states ... See more keywords
Probing the W tb vertex structure in t-channel single-top-quark production and decay in pp collisions at s=8$$ \sqrt{s}=8 $$ TeV with the ATLAS detector
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2017)124
Abstract: A bstractTo probe the W tb vertex structure, top-quark and W -boson polarisation observables are measured from t-channel single-top-quark events produced in proton-proton collisions at a centre-of-mass energy of 8 TeV. The dataset corresponds to… read more here.
Keywords: channel single; detector; quark; top quark ... See more keywords
Search for electroweak production of a vector-like quark decaying to a top quark and a Higgs boson using boosted topologies in fully hadronic final states
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2017)136
Abstract: A bstractA search is performed for electroweak production of a vector-like top quark partner T of charge 2/3 in association with a standard model top or bottom quark, using 2.3 fb−1 of proton-proton collision data… read more here.
Keywords: higgs boson; electroweak production; quark higgs; quark ... See more keywords
Top-quark partial compositeness beyond the effective field theory paradigm
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DOI: 10.1007/jhep04(2020)040
Abstract: In theories of Partial Compositeness the top quark is a mixture of a composite and an elementary state, and as a consequence its interactions with gauge bosons are expected to deviate from those of a… read more here.
Keywords: effective field; partial compositeness; field theory; quark ... See more keywords
Improved constraints on effective top quark interactions using edge convolution networks
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2022)137
Abstract: Abstract We explore the potential of Graph Neural Networks (GNNs) to improve the performance of high-dimensional effective field theory parameter fits to collider data beyond traditional rectangular cut-based differential distribution analyses. In this study, we… read more here.
Keywords: top quark; physics; quark interactions; improved constraints ... See more keywords
Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at $$ \sqrt{s} $$ = 13 TeV
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep06(2020)146
Abstract: The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d t) and chromomagnetic (μ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the… read more here.
Keywords: top quark; forward backward; chromoelectric chromomagnetic; quark forward ... See more keywords
Search for pair production of up-type vector-like quarks and for four-top-quark events in final states with multiple b-jets with the ATLAS detector
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)089
Abstract: A bstractA search for pair production of up-type vector-like quarks (T ) with a significant branching ratio into a top quark and either a Standard Model Higgs boson or a Z boson is presented. The… read more here.
Keywords: vector like; four top; production; multiple jets ... See more keywords
Search for flavour-changing neutral current top-quark decays t → qZ in proton-proton collisions at s=13$$ \sqrt{s}=13 $$ TeV with the ATLAS detector
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)176
Abstract: A bstractA search for flavour-changing neutral-current processes in top-quark decays is presented. Data collected with the ATLAS detector from proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of s=13$$ \sqrt{s}=13 $$ TeV,… read more here.
Keywords: proton; changing neutral; neutral current; quark ... See more keywords