0000000000308983

AUTHOR

Zhen-xing Zhao

showing 3 related works from this author

Measurements ofWγandZγproduction inppcollisions ats=7  TeVwith the ATLAS detector at the LHC

2013

The integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high-energy photon are measured using pp collisions at root s = 7 TeV. The analyse ...

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderPhoton010308 nuclear & particles physicsAtlas detectorHigh Energy Physics::PhenomenologyTevatronTechnicolor01 natural sciences7. Clean energyNuclear physicsmedicine.anatomical_structureAtlas (anatomy)0103 physical sciencesmedicine010306 general physicsBosonPhysical Review D
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Measurement of Higgs boson production in the diphoton decay channel inppcollisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

2014

A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb(-1) of proton-proton collisions data at root s = 7 TeV and 20.3 fb(-1) at root s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be mu = 1.17 +/- 0.27 at the value of the Higgs boson mass measured by ATLAS, m(H) = 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of m(H). They are found to be mu(ggF) = 1.32…

PhysicsNuclear and High Energy PhysicsParticle physicsPhotonLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::Phenomenology7. Clean energy01 natural sciencesStandard ModelVector bosonGluonNuclear physicsmedicine.anatomical_structure13. Climate actionAtlas (anatomy)0103 physical sciencesHiggs bosonmedicineHigh Energy Physics::ExperimentCenter of mass010306 general physicsPhysical Review D
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Measurements of spin correlation in top-antitop quark events from proton-proton collisions ats=7  TeVusing the ATLAS detector

2014

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 integrated luminosity of 4.6 fb(-1). Events are selected in final states with two charged leptons and at least two jets and in final states with one charged lepton and at least four jets. Four different observables sensitive to different properties of the top quark pair production mechanism are used to extract the correlation between the top and antitop quark spins. Some of these observables are measured for the first time. The measurements are in good agreement with the Stan…

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsTop quarkLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyTevatron01 natural sciences7. Clean energyBottom quarkNuclear physicsPair production0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsLeptonBosonPhysical Review D
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