Observation of the Isospin-Violating Decay J/ψ → φπ⁰ f₀(980)

dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)en_US
dc.contributor.authorAblikim, M.en_US
dc.contributor.authorAchasov, M. N.en_US
dc.contributor.authorAi, X. C.en_US
dc.contributor.authorAlbayrak, O.en_US
dc.contributor.authorAlbrecht, M.en_US
dc.contributor.authorAmbrose, D. J.en_US
dc.contributor.authorAmoroso, A.en_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorBESIII Collaborationen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2016-12-16T22:50:21Z
dc.date.available2016-12-16T22:50:21Z
dc.date.created2015-07en_US
dc.date.issued2015-07en_US
dc.description.abstractUsing a sample of 1.31 x 10⁹ J/ψ events collected with the BESIII detector at the BEPCII collider, the decays J/ψ → φπ⁺π⁻π⁰ and J/ψ → φπ⁰π⁰π⁰ are investigated. The isospin-violating decay J/ψ → φπ⁰f₀(980) with f₀(980) → ππ is observed for the first time. The width of the f₀(980) obtained from the dipion mass spectrum is found to be much smaller than the world average value. In the π⁰f₀(980) mass spectrum, there is evidence of f₁(1285) production. By studying the decay J/ψ → φη', the branching fractions of η' → π⁺π⁻π⁰ and η' →π⁰π⁰π⁰, as well as their ratio, are also measured.en_US
dc.description.sponsorshipThis work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11125525, No. 11235011, No. 11322544, No. 11335008, and No. 11425524; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. 11179007, No. U1232201, and No. U1332201; CAS under Contracts No. KJCX2-YW-N29 and No. KJCX2-YW-N45; German Research Foundation DFG under Collaborative Research Center Contract No. CRC-1044; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; U.S. Department of Energy under Contracts No. DE-FG02-04ER41291, No. DE-FG02-05ER41374, No. DE-FG02-94ER40823, and No. DESC0010118; and WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.en_US
dc.identifier.bibliographicCitationAblikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2015. "Observation of the isospin-violating decay J/ψ → φπ⁰ f₀(980)." Physical Review D 92(1), doi: 10.1103/PhysRevD.92.012007en_US
dc.identifier.issn1550-7998en_US
dc.identifier.issue1en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/5163
dc.identifier.volume92en_US
dc.language.isoenen_US
dc.publisherAmer Physical Socen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevD.92.012007
dc.rights©2015 American Physical Societyen_US
dc.sourcePhysical Review D
dc.subjectCausality (Physics)en_US
dc.subjectBranching fractions (Nuclear physics)en_US
dc.subjectKaonsen_US
dc.subjectMass (Physics)en_US
dc.subjectRadioactive decayen_US
dc.subjectParticle tracks (Nuclear physics)en_US
dc.subjectPhotonsen_US
dc.titleObservation of the Isospin-Violating Decay J/ψ → φπ⁰ f₀(980)en_US
dc.type.genreArticleen_US
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