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dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorATLAS Collaboration
dc.date.accessioned2018-06-26T05:45:01Z
dc.date.available2018-06-26T05:45:01Z
dc.date.issued2016-04-16
dc.identifier.citationAad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M. … ATLAS Collaboration. (2016). Search for new phenomena in events with at least three photons collected in pp collisions at root s=8 TeV with the ATLAS detector. European Physical Journal C, 76(4), 1-26, http://dx.doi.org/10.1140/epjc/s10052-016-4034-8en_US
dc.identifier.issn1434-6052
dc.identifier.issn1434-6044
dc.identifier.other000375307600001 (WOS)
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-016-4034-8
dc.identifier.urihttp://hdl.handle.net/11376/3127
dc.descriptionÇetin, Serkant Ali (Dogus Author)en_US
dc.description.abstractResults of a search for new phenomena in events with at least three photons are reported. Data from proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 20.3 fb(-1), were collected with the ATLAS detector at the LHC. The observed data are well described by the Standard Model. Limits at the 95 % confidence level on new phenomena are presented based on the rate of events in an inclusive signal region and a restricted signal region targeting the rare decay Z -> 3 gamma, as well as di-photon and tri-photon resonance searches. For a Standard Model Higgs boson decaying to four photons via a pair of intermediate pseudoscalar particles ( a), limits are found to be sigma xBR( h -> aa) xBR(a -> gamma gamma) 2 < 10(-3) sigma(SM) for 10 GeV < m(a) < 62 GeV. Limits are also presented for Higgs boson-like scalars (H) for m(H) > 125 GeV, and for a Z' decaying to three photons via Z' -> a + gamma -> 3 gamma. Additionally, the observed limit on the branching ratio of the Z boson decay to three photons is found to be BR( Z -> 3 gamma) < 2.2 x 10(-6), a result five times stronger than the previous result from LEP.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.isversionof10.1140/epjc/s10052-016-4034-8en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectZ-Boson Decayen_US
dc.subjectLHCen_US
dc.titleSearch for new phenomena in events with at least three photons collected in pp collisions at root s=8 TeV with the ATLAS detectoren_US
dc.typearticleen_US
dc.relation.journalEuropean Physical Journal Cen_US
dc.contributor.departmentDoğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.contributor.authorIDTR3959en_US
dc.identifier.volume76en_US
dc.identifier.issue4en_US
dc.identifier.startpage1en_US
dc.identifier.endpage26en_US


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