0000000000876406

AUTHOR

X.y. Gao

showing 5 related works from this author

An improved limit for Γ e e of X ( 3872 ) and Γ e e measurement of ψ ( 3686 )

2015

Nuclear and High Energy PhysicsPhysics Letters B
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Measurement of the leptonic decay width of J/ψ using initial state radiation

2016

Physics letters / B 761, 98 - 103(2016). doi:10.1016/j.physletb.2016.08.011

Particle physicsNuclear and High Energy PhysicsElectron–positron annihilationBESIII; Electronic width; Initial state radiation; J/ψ resonance; Nuclear and High Energy PhysicsRadiation01 natural sciences530law.inventionHigh Energy Physics - ExperimentNONuclear physicsE(+)E(-) COLLISIONSCharmonium; Drift Chambers; BranchinglawJ/psi resonance0103 physical sciencesJ/ψ resonanceFysikddc:530Physics nuclear010306 general physicsColliderNuclear ExperimentPhysics010308 nuclear & particles physicsBranching fractionPhysicsBESIIIState (functional analysis)J/? resonanceFINAL-STATESlcsh:QC1-999BESIII; Electronic width; Initial state radiation; J/ψ resonancePhysical SciencesAstronomy & astrophysicsPhysics particles & fieldsHigh Energy Physics::ExperimentInitial state radiationElectronic widthCROSS-SECTIONlcsh:PhysicsPhysics Letters B
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Scaler mode technique for the ARGO-YBJ detector

2008

The ARGO-YBJ experiment has been designed to study the Extensive Air Showers with an energy threshold lower than that of the existing arrays by exploiting the high altitude location(4300 m a.s.l. in Tibet, P.R. China) and the full ground plane coverage. The lower energy limit of the detector (E $\sim$ 1 GeV) is reached by the scaler mode technique, i.e. recording the counting rate at fixed time intervals. At these energies, transient signals due to local (e.g. Forbush Decreases) and cosmological (e.g. Gamma Ray Bursts) phenomena are expected as a significant variation of the counting rate compared to the background. In this paper the performance of the ARGO-YBJ detector operating in scaler …

Gamma ray burstAstrophysics::High Energy Astrophysical PhenomenaCamere a piani resistiviFOS: Physical sciencesCosmic rayAstrophysicsRivelatori di sciami estesi01 natural sciencesRaggi cosmiciOpticsSettore FIS/05 - Astronomia e Astrofisica0103 physical sciencesLimit (music)010303 astronomy & astrophysicsArgoGround planegamma ray bursts cosmic rays extended air showersPhysics010308 nuclear & particles physicsbusiness.industrySettore FIS/01 - Fisica SperimentaleAstrophysics (astro-ph)DetectorMode (statistics)Astronomy and AstrophysicsSciami estesibusinessGamma-ray burstEnergy (signal processing)
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Measurement of the branching fractions of Ds+→η′X and Ds+→η′ρ+ in e+e−→Ds+Ds−

2015

We study D-s(+) decays to final states involving the eta' with a 482 pb(-1) data sample collected at root s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractions B(D-s(+) -> eta'X) = (8.8 +/- 1.8 +/- 0.5)% and B(D-s(+) > eta'rho(+)) = (5.8 +/- 1.4 +/- 0.4)% where the first uncertainty is statistical and the second is systematic. In addition, we estimate an upper limit on the non-resonant branching ratio B(D-s(+) -> eta'pi(+)pi(0)) eta'rho(+)). (C) 2015 The Authors. Published by Elsevier B.V.

PhysicsNuclear and High Energy PhysicsMeson010308 nuclear & particles physicsBranching fractionElectron–positron annihilationAnalytical chemistryBranching (polymer chemistry)01 natural sciencesNuclear physics0103 physical sciencesPiHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsPhysics Letters B
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An improved limit for Γee of X(3872) and Γee measurement of ψ(3686)

2015

Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e(+)e(-) -> gamma(ISR) X(3872) -> gamma(ISR)pi(+ ...

PhysicsPhysics::General PhysicsNuclear and High Energy PhysicsParticle physicsPhotonPhysics::Instrumentation and Detectors010308 nuclear & particles physicsBranching fractionAstrophysics::High Energy Astrophysical PhenomenaDetectorQuantum number01 natural sciencesNuclear physics0103 physical sciencesHigh Energy Physics::ExperimentStatistical analysisLimit (mathematics)Nuclear Experiment010306 general physicsStorage ringX(3872)Physics Letters B
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