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Measurement of the Absolute Branching Fraction for Λ_c⁺ → Λe⁺ν_e
(Amer Physical Soc, 2015-11-25)
We report the first measurement of the absolute branching fraction for Λ_c⁺. This measurement is based on 567 pb⁻¹ of e⁺e⁻ annihilation data produced at √s = 4.599 GeV, which is just above the Λ_c⁺ Λ̅_c̅ threshold. The ...
Properties of g → bb̅ at Small Opening Angles in pp Collisions with the ATLAS Detector at √s =13 TeV
The fragmentation of high-energy gluons at small opening angles is largely unconstrained by present measurements. Gluon splitting to b-quark pairs is a unique probe into the properties of gluon fragmentation because ...
Measurement of the Production of a W Boson in Association with a Charm Quark in pp Collisions at √s=7 TeV with the ATLAS Detector
(Springer, 2014-05-16)
The production of a W boson in association with a single charm quark is studied using 4.6 fb⁻¹ of pp collision data at√s = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson ...
Search for Light Resonances Decaying to Boosted Quark Pairs and Produced in Association with a Photon or a Jet in Proton-Proton Collisions at √s=13 TeV with the ATLAS Detector
(Elsevier Science B.V., 2018-11-02)
This Letter presents a search for new light resonances decaying to pairs of quarks and produced in association with a high-p_{T} photon or jet. The dataset consists of proton-proton collisions with an integrated luminosity ...
Measurement of the Charge Asymmetry in Dileptonic Decays of Top Quark Pairs in pp Collisions at √s=7 TeV Using the ATLAS Detector
(Springer, 2015-05-01)
A measurement of the top-antitop (tt̅) charge asymmetry is presented using data corresponding to an integrated luminosity of 4.6 fb⁻¹ of LHC pp collisions at a centre-of-mass energy of 7 TeV collected by the ATLAS detector. ...
Measurements of Spin Correlation in Top-Antitop Quark Events from Proton-Proton Collisions at √s = 7 TeV using the ATLAS Detector
(American Physical Society, 2014-12-24)
Measurements of spin correlation in top quark pair production are presented using data collected with the ATLAS detector at the LHC with proton-proton collisions at a center-of-mass energy of 7 TeV, corresponding to an ...
Measurements of Inclusive and Differential Fiducial Cross-Sections of tt̅ Production with Additional Heavy-Flavour Jets in Proton-Proton Collisions at √s=13 TeV with the ATLAS Detector
This paper presents measurements of tt¯ production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to ...
Search for Invisible Particles Produced in Association with Single-Top-Quarks in Proton-Proton Collisions at √s = 8 TeV with the ATLAS Detector
(EDP Sciences, 2015-02-18)
A search for the production of single-top-quarks in association with missing energy is performed in proton–proton collisions at a centre-of-mass energy of √s = 8 Tev with the ATLAS experiment at the large hadron collider ...
Search for Single Production of a Vector-Like Quark via a Heavy Gluon in the 4b Final State with the ATLAS Detector in pp Collisions at √s̅ = 8 TeV
(Elsevier, 2016-05-03)
A search is performed for the process pp → G* → B_{H}b̅ / B̅_{H}b → Hbb̅ → bb̅bb̅ predicted in composite Higgs scenarios, where G* is a heavy colour octet vector resonance and B_{H} a vector-like quark of charge -1/3. The ...
Measurements of Charge and CP Asymmetries in B-Hadron Decays Using Top-Quark Events Collected by the ATLAS Detector in PP Collisions at √s̅ = 8 TeV
(Springer Verlag, 2017-02-14)
Same- and opposite-sign charge asymmetries are measured in lepton+jets tt̅ 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 ...