0000000000056370

AUTHOR

X.y. Jiang

showing 7 related works from this author

Measurement of the absolute branching fraction for Λc+→Λμ+νμ

2017

Abstract We report the first measurement of the absolute branching fraction for Λ c + → Λ μ + ν μ . This measurement is based on a sample of e + e − annihilation data produced at a center-of-mass energy s = 4.6  GeV , collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567  pb − 1 . The branching fraction is determined to be B ( Λ c + → Λ μ + ν μ ) = ( 3.49 ± 0.46 ( stat ) ± 0.27 ( syst ) ) % . In addition, we calculate the ratio B ( Λ c + → Λ μ + ν μ ) / B ( Λ c + → Λ e + ν e ) to be 0.96 ± 0.16 ( stat ) ± 0.04 ( syst ) .

Nuclear and High Energy PhysicsBESIII детекторElectron–positron annihilationAnalytical chemistryAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesLuminosityNOлептоны0103 physical sciencesAbsolute branching fraction010306 general physicsNuclear ExperimentPhysicsAnnihilation010308 nuclear & particles physicsBranching fraction?c +Absolute branching fraction; BESIII; Semi-leptonic decay; Λc+; Nuclear and High Energy PhysicsBESIIIΛc+lcsh:QC1-999BaryonBEPCII коллайдерSemi-leptonic decayHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary Astrophysicslcsh:Physics
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Measurement of cross sections of the interactions e+e−→ ϕϕω and e+e−→ ϕϕϕ at center-of-mass energies from 4.008 to 4.600 GeV

2017

Abstract Using data samples collected with the BESIII detector at the BEPCII collider at six center-of-mass energies between 4.008 and 4.600 GeV, we observe the processes e + e − → ϕ ϕ ω and e + e − → ϕ ϕ ϕ . The Born cross sections are measured and the ratio of the cross sections σ ( e + e − → ϕ ϕ ω ) / σ ( e + e − → ϕ ϕ ϕ ) is estimated to be 1.75 ± 0.22 ± 0.19 averaged over six energy points, where the first uncertainty is statistical and the second is systematic. The results represent first measurements of these interactions.

Nuclear and High Energy PhysicsBESIII детекторe+e- annihilationElectron–positron annihilation01 natural sciencesNOlaw.inventionNuclear physicsCross section (physics)law0103 physical sciencesCross section; e+e−annihilation; Triple quarkonia; Nuclear and High Energy Physics010306 general physicsColliderTriple quarkoniaPhysicsAnnihilationCross section010308 nuclear & particles physicse+e−annihilatione+e− annihilationlcsh:QC1-999BEPCII коллайдерe+e? annihilationCenter of massCross section; e+e- annihilation; Triple quarkonia; Nuclear and High Energy Physicslcsh:Physics
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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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Observation of ψ(3686)→η′e+e−

2018

Abstract Using a data sample of 448.1 × 10 6 ψ ( 3686 ) events collected with the BESIII detector at the BEPCII collider, we report the first observation of the electromagnetic Dalitz decay ψ ( 3686 ) → η ′ e + e − , with significances of 7.0σ and 6.3σ when reconstructing the η ′ meson via its decay modes η ′ → γ π + π − and η ′ → π + π − η ( η → γ γ ), respectively. The weighted average branching fraction is determined to be B ( ψ ( 3686 ) → η ′ e + e − ) = ( 1.90 ± 0.25 ± 0.11 ) × 10 − 6 , where the first uncertainty is statistical and the second systematic.

Dalitz decayNuclear and High Energy PhysicsMesonElectron–positron annihilationBESIII; Charmonium; Dalitz decay; e+e− Annihilation; Nuclear and High Energy Physicse + e − Annihilation01 natural sciencesOmegaNOlaw.inventionBESIII; Charmonium; Dalitz decay; e+e−Annihilation; Nuclear and High Energy PhysicsNuclear physicslaw0103 physical sciencese+e−Annihilation010306 general physicsColliderCharmoniumPhysics010308 nuclear & particles physicsGenerator (category theory)Branching fractionBESIIIe+e− AnnihilationPseudoscalarBESIII; Charmonium; Dalitz decay; e + e − Annihilation ; Nuclear and High Energy 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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Measurements of cross section of e+e−→pp¯π0 at center-of-mass energies between 4.008 and 4.600 GeV

2017

Based on e(+)e(-) annihilation data samples collected with the BESIII detector at the BEPCII collider at 13 center-of-mass energies from 4.008 to 4.600 GeV, measurements of the Born cross section o ...

PhysicsNuclear and High Energy PhysicsParticle physicsAnnihilationPhysics::Instrumentation and Detectors010308 nuclear & particles physicsPartial wave analysisElectron–positron annihilationHadronDalitz plot01 natural scienceslaw.inventionNuclear physicslaw0103 physical sciencesHigh Energy Physics::ExperimentCenter of massBorn approximation010306 general physicsColliderPhysics Letters B
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Measurements of the branching fractions for D+→KS0KS0K+, KS0KS0π+ and D0→KS0KS0, KS0KS0KS0

2017

Abstract By analyzing 2.93 fb − 1 of data taken at the ψ ( 3770 ) resonance peak with the BESIII detector, we measure the branching fractions for the hadronic decays D + → K S 0 K S 0 K + , D + → K S 0 K S 0 π + , D 0 → K S 0 K S 0 and D 0 → K S 0 K S 0 K S 0 . They are determined to be B ( D + → K S 0 K S 0 K + ) = ( 2.54 ± 0.05 s t a t . ± 0.12 s y s . ) × 10 − 3 , B ( D + → K S 0 K S 0 π + ) = ( 2.70 ± 0.05 s t a t . ± 0.12 s y s . ) × 10 − 3 , B ( D 0 → K S 0 K S 0 ) = ( 1.67 ± 0.11 s t a t . ± 0.11 s y s . ) × 10 − 4 and B ( D 0 → K S 0 K S 0 K S 0 ) = ( 7.21 ± 0.33 s t a t . ± 0.44 s y s . ) × 10 − 4 , where the second one is measured for the first time and the others are measured wit…

PhysicsNuclear and High Energy PhysicsMeson010308 nuclear & particles physicsElectron–positron annihilation0103 physical sciencesHadronAnalytical chemistryResonance010306 general physicsBranching (polymer chemistry)01 natural sciencesPhysics Letters B
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