Measurement of the phase between strong and electromagnetic amplitudes of J/Psi decays

Basit Öğe Kaydı
dc.WoS.categoriesAstronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2021-01-13T07:05:36Z
dc.date.available2021-01-13T07:05:36Z
dc.date.issued2019-04-10
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractUsing 16 energy points of e(+) e(-) annihilation data collected in the vicinity of the J/Psi resonance with the BESIII detector and with a total integrated luminosity of around 100 pb(-1), we study the relative phase between the strong and electromagnetic amplitudes of J/Psi decays. The relative phase between J/Psi electromagnetic decay and the continuum process (e(+) e(-) annihilation without the J/Psi resonance) is confirmed to be zero by studying the cross section lineshape of mu(+) mu(-) production. The relative phase between J/Psi strong and electromagnetic decays is then measured to be (84.9 +/- 3.6)degrees or (-84.7 +/- 3.1)degrees for the 2(pi(+) pi(-) )pi(0) final state by investigating the interference pattern between the J/Psi decay and the continuum process. This is the first measurement of the relative phase between J/Psi strong and electromagnetic decays into a multihadron final state using the lineshape of the production cross section. We also study the production lineshape of the multihadron final state eta pi(+) pi(-) with eta -> pi(+) pi(-) pi(0) , which provides additional information about the phase between the J/Psi electromagnetic decay amplitude and the continuum process. Additionally, the branching fraction of J/Psi -> 2(pi(+) pi(-) )pi(0) is measured to be (4.73 +/- 0.44)% or (4.85 +/- 0.45)%, and the branching fraction of J/Psi -> eta pi(+) pi(-) is measured to be (3.78 +/- 0.68) x 10(-4). Both of them are consistent with the world average values. The quoted uncertainties include both statistical and systematic uncertainties, which are mainly caused by the low statistics. (C) 2019 The Author. Published by Elsevier B.V.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1016/j.physletb.2019.03.001
dc.identifier.issn1873-2445
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-85062993535en_US
dc.identifier.urihttps://hdl.handle.net/11411/3087
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2019.03.001
dc.identifier.wosWOS:000462321800054en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors50+en_US
dc.pages375-384en_US
dc.publisherELSEVIERen_US
dc.relation.ispartofPHYSICS LETTERS Ben_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPhaseen_US
dc.subjectStrong amplitudeen_US
dc.subjectElectromagnetic amplitudeen_US
dc.subjectJ/Psi decayen_US
dc.subjectBESIIIen_US
dc.titleMeasurement of the phase between strong and electromagnetic amplitudes of J/Psi decays
dc.typeArticle
dc.volume791en_US

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