Search for rare decays of Z and Higgs bosons to J/ and a photon in proton-proton collisions at 13 TeV

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dc.WoS.categoriesPhysics, Particles & Fieldsen_US
dc.authorid0000-0002-9007-8260en_US
dc.contributor.authorYetkin, Elif Aslı
dc.date.accessioned2021-02-10T07:14:11Z
dc.date.available2021-02-10T07:14:11Z
dc.date.issued2019-01-30
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractA search is presented for decays of Z and Higgs bosons to a J/ meson and a photon, with the subsequent decay of the J/ to +-. The analysis uses data from proton-proton collisions with an integrated luminosity of 35.9fb-1 at =13collected with the CMS detector at the LHC. The observed limit on the ZJ/ decay branching fraction, assuming that the J/ meson is produced unpolarized, is 1.4x10-6 at 95% confidence level, which corresponds to a rate higher than expected in the standard model by a factor of 15. For extreme-polarization scenarios, the observed limit changes from -13.6 to +8.6% with respect to the unpolarized scenario. The observed upper limit on the branching fraction for HJ/ where the J/ meson is assumed to be transversely polarized is 7.6x10-4, a factor of 260 larger than the standard model prediction. The results for the Higgs boson are combined with previous data from proton-proton collisions at =8TeV to produce an observed upper limit on the branching fraction for HJ/ that is a factor of 220 larger than the standard model value.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1140/epjc/s10052-019-6562-5
dc.identifier.issn1434-6052
dc.identifier.issn1434-6044
dc.identifier.pmid30872972en_US
dc.identifier.urihttps://hdl.handle.net/11411/3232
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-019-6562-5
dc.identifier.wosWOS:000457328300002en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.issue2en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors200+en_US
dc.publisherSPRINGERen_US
dc.relation.ispartofEUROPEAN PHYSICAL JOURNAL Cen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPP COLLISIONSen_US
dc.subjectPARTON DISTRIBUTIONSen_US
dc.subjectMASSen_US
dc.titleSearch for rare decays of Z and Higgs bosons to J/ and a photon in proton-proton collisions at 13 TeV
dc.typeArticle
dc.volume79en_US

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