0000000000601840

AUTHOR

H.y. Chen

showing 6 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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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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Measurement of in oscillation using quantum correlations in at

2015

We report a measurement of the parameter y(CP) in D-0-(D) over bar (0) oscillations performed by taking advantage of quantum coherence between pairs of D-0(D) over bar (0) mesons produced in e(+)e(-) annihilations near threshold. In this work, doubly-tagged D-0(D) over bar (0) events, where one D decays to a CP eigenstate and the other D decays in a semileptonic mode, are reconstructed using a data sample of 2.92 fb(-1) collected with the BESIII detector at the center-of-mass energy of root s = 3.773 GeV. We obtain y(CP) = (-2.0 +/- 1.3 +/- 0.7)%, where the first uncertainty is statistical and the second is systematic. This result is compatible with the current world average.

PhysicsNuclear and High Energy PhysicsParticle physicsAnnihilationMeson010308 nuclear & particles physicsOscillationQuantum correlation01 natural sciencesNuclear physicsPion0103 physical sciencesCP violationCoherence (signal processing)High Energy Physics::Experiment010306 general physicsEigenvalues and eigenvectors
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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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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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Search for GW signals associated with GRBs

2021

We present the results of targeted searches for gravitational-wave transients associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo, which took place from 2016 November to 2017 August. We have analyzed 98 gamma-ray bursts using an unmodeled search method that searches for generic transient gravitational waves and 42 with a modeled search method that targets compact-binary mergers as progenitors of short gamma-ray bursts. Both methods clearly detect the previously reported binary merger signal GW170817, with p-values of <9.38x10^-6^ (modeled) and 3.1x10^-4^ (unmodeled). We do not find any significant evidence for gravitational-wave signals assoc…

Astrophysics and AstronomyGamma-ray astronomyhigh energy astrophysicsAstrophysics::High Energy Astrophysical PhenomenaPhysicsAstrophysics::Cosmology and Extragalactic Astrophysicsstellar astronomyGamma ray burstsGravitational wavesCosmologyobservational astronomyGamma ray astronomyGamma-ray burstsAstrophysical ProcessesNatural Sciences
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