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dc.contributor.authorKolcu, Onur Buğraen_US
dc.contributor.authorBESIII Collaborationen_US
dc.date.accessioned2021-08-11T08:28:23Z
dc.date.available2021-08-11T08:28:23Z
dc.date.issued2021en_US
dc.identifier.citationAblikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Amoroso, A., ... & Kurth, M. G. (2021). Measurement of the branching fraction of and search for a C P-violating asymmetry in η′→ π+ π− e+ e− at BESIII. Physical Review D, 103(9), 092005.en_US
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.103.092005
dc.identifier.urihttps://hdl.handle.net/20.500.12294/2810
dc.description.abstractTherare decay eta' -> pi(+) pi(-) e(+) e(-) is studied using a sample of1.3 x 10(9) J/Psi events collected with the BESIII detector at BEPCII in 2009 and 2012. The branching fraction is measured with improved precision to be (2.42 +/- 0.05(stat) +/- 0.08(syst)) x 10(-3). Due to the inclusion of new data, this result supersedes the last BESIII result on this branching fraction. In addition, the CP-violating asymmetry in the angle between the decay planes of the pi(+)pi(-)-pair and the e(+)e(-)-pair is investigated. A measurable value would indicate physics beyond the standard model; the result is A(CP) = (2.9 +/- 3.7(stat) +/- 1.1(syst))%, which is consistent with the standard model expectation of no CP-violation. The precision is comparable to the asymmetry measurement in the K-L(0) -> pi(+) pi(-) e(+) e(-) decay where the observed (14 +/- 2)% effect is driven by a standard model mechanism.en_US
dc.language.isoengen_US
dc.publisherAmer Physical Soc.en_US
dc.relation.ispartofPhysical Review Den_US
dc.identifier.doi10.1103/PhysRevD.103.092005en_US
dc.identifier.doi10.1103/PhysRevD.103.092005
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rightsAttribution-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nd/3.0/us/*
dc.subjectEvent Generatorsen_US
dc.titleMeasurement of the Branching Fraction of and Search for a CP-violating Asymmetry in Eta ' -> pi(+) pi(-) e(+) e(-) at BESIIIen_US
dc.typearticleen_US
dc.departmentMühendislik ve Mimarlık Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.authorid0000-0002-9177-1286en_US
dc.identifier.volume103en_US
dc.identifier.issue9en_US
dc.identifier.startpage1en_US
dc.identifier.endpage11en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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