Browsing Natural and Mathematical Sciences by Subject "Top physics"
Now showing items 1-20 of 43
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Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at √s = 8 TeV
(Springer Nature, 2020-08-12)The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at ... -
Measurement of the cross section for t¯t production with additional jets and b jets in pp collisions at √s = 13 TeV
(Springer Nature, 2020-07-20)Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (sigma(t (t) over barb (b) over bar)) and in association with a pair of jets from quarks of any ... -
Measurement of the cross section ratio σttbb/σttjj in pp collisions at √s=8 TeV
(Elsevier, 2015-06-30)The first measurement of the cross section ratio View the MathML source is presented using a data sample corresponding to an integrated luminosity of 19.6 fb−1 collected in pp collisions at View the MathML source with the ... -
Measurement of the inclusive and differential t t¯ γ cross sections in the single-lepton channel and EFT interpretation at √s = 13 TeV
(Springer, 2021-12-23)The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set, corresponding to an integrated luminosity of 137 ... -
Measurement of the mass of the top quark in decays with a J/ψ meson in pp collisions at 8 TeV
(Springer Nature, 2016)A first measurement of the top quark mass in the decay channel t → (W → ℓν) (b → J/ψ + X → μ+μ− + X) is presented. The analysis uses events selected from the proton-proton collisions recorded by the CMS detector at the LHC ... -
Measurement of the semileptonic t t ¯ + γ production cross section in pp collisions at √s=8 TeV
(Springer International Publishing, 2017-10-02)A measurement of the cross section for top quark-antiquark ( tt¯tt¯ ) pairs produced in association with a photon in proton-proton collisions at s√=8s=8 TeV is presented. The analysis uses data collected with the CMS ... -
Measurement of the t t ¯ production cross section in the eμ channel in proton-proton collisions at √s = 7 and 8 TeV
(Springer Nature, 2016-08)The inclusive cross section for top quark pair production is measured in proton-proton collisions at s√=7s=7 and 8 TeV, corresponding to 5.0 and 19.7 fb−1, respectively, with the CMS experiment at the LHC. The cross ... -
Measurement of the t-channel single-top-quark production cross section and of the |V (tb)| CKM matrix element in pp collisions at root s=8 TeV
(Springer Science+Business Media, 2014-06)Measurements are presented of the t-channel single-top-quark production cross section in proton-proton collisions at root s = 8 TeV. The results are based on a data sample corresponding to an integrated luminosity of 19.7 ... -
Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV
(Springer Nature, 2020-06-24)The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric ((d) over cap (t)) and chromomagnetic ((mu) over capt) moments have been measured using LHC pp collisions at a center-of-mass energy ... -
Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at √s = 13 TeV
(Springer, 2021-12-21)A measurement of the top quark mass is performed using a data sample enriched with single top quark events produced in the t channel. The study is based on proton- proton collision data, corresponding to an integrated ... -
Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at s√ = 13 TeV
(Springer Nature, 2020-02-28)The cross section of top quark pair production is measured in the t (t) over bar -> (lv(l))(tau(h)v(tau))b (b) over bar final state, where tau(h) refers to the hadronic decays of the tau lepton, and l is either an electron ... -
Measurement of the tt¯ production cross section in the dilepton channel in pp collisions at s√ = 8 TeV
(Springer Science+Business Media, 2014-02)The top-antitop quark (t¯t) production cross section is measured in protonproton collisions at √s = 8 TeV with the CMS experiment at the LHC, using a data sample corresponding to an integrated luminosity of 5.3 fb−1. The ... -
Measurement of the tt¯ production cross section using events with one lepton and at least one jet in pp collisions at √s=13 TeV
(Springer International Publishing, 2017-09-13)A measurement of the tt¯tt¯ production cross section at s√=13s=13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb−1, collected with the CMS detector at the LHC. ... -
Measurement of the W-boson helicity in top-quark decays from t(t)over-bar production in lepton plus jets events in pp collisions at root s=7 TeV
(Springer Science+Business Media, 2013-10)The W-boson helicity fractions in top-quark decays are measured with TeX events in the lepton+jets final state, using proton-proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the CMS detector ... -
Measurement of top quark pair production in association with a Z boson in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-10)A measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds ... -
Measurement of top quark polarisation in t-channel single top quark production
(2016-04)A first measurement of the top quark spin asymmetry, sensitive to the top quark polarisation, in t-channel single top quark production is presented. It is based on a sample of pp collisions at a centre-of-mass energy of 8 ... -
Measurements of the t(t)Overbar charge asymmetry using the dilepton decay channel in pp collisions at root s=7 TeV
(Springer Science+Business Media, 2014-04)The t(t)Overbar charge asymmetry in proton-proton collisions root s = 7TeV is measured using the dilepton decay channel (ee, e mu, or mu mu). The data correspond to a total integrated luminosity of 5.0 fb(-1), collected ... -
Measurements of tt¯ differential cross sections in proton-proton collisions at s√=13 TeV using events containing two leptons
(Springer Nature, 2019-02-22)Measurements of differential top quark pair t (t) over bar cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The ... -
Observation of top quark pairs produced in association with a vector boson in pp collisions at root s=8 TeV
(Springer Nature, 2016-01)Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb−1, collected by the CMS ...
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