Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detector

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dc.authoridSerkant Ali Çetin / 0000-0001-5050-8441en_US
dc.authorscopusidSerkant Ali Çetin / 34567544400en_US
dc.authorwosidSerkant Ali Çetin / AGF-0147-2022
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorZwalinski, L.
dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorAbidi, S. H.
dc.date.accessioned2022-04-06T05:38:22Z
dc.date.available2022-04-06T05:38:22Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesien_US
dc.description.abstractThis paper presents a measurement of the electroweak production of two jets in association with a Z gamma pair, with the Z boson decaying into two neutrinos. It also presents a search for invisible or partially invisible decays of a Higgs boson with a mass of 125 GeV produced through vectorboson fusion with a photon in the final state. These results use data from LHC proton-proton collisions at root s = 13 TeV collected with the ATLAS detector and corresponding to an integated luminosity of 139 fb(-1). The event signature, shared by all benchmark processes considered for the measurements and searches, is characterized by a significant amount of unbalanced transverse momentum and a photon in the final state, in addition to a pair of forward jets. Electroweak Z gamma production in association with two jets is observed in this final state with a significance of 5.2 (5.1 expected) standard deviations. The measured fiducial cross-section for this process is 1.31 +/- 0.29 fb. An observed (expected) upper limit of 0.37 (0.34(-0.10)(+0.15)) at 95% confidence level is set on the branching ratio of a 125 GeV Higgs boson to invisible particles, assuming the Standard Model production cross-section. The signature is also interpreted in the context of decays of a Higgs boson into a photon and a dark photon. An observed (expected) 95% CL upper limit on the branching ratio for this decay is set at 0.018 (0.017(-0.005)(+0.007)), assuming the Standard Model production cross-section for a 125 GeV Higgs boson.en_US
dc.identifier.citationAad, G., Abbott, B., Cetin, Serkant Ali. (2022). Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detector. European Physical Journal, 82(2).en_US
dc.identifier.doi10.1140/epjc/s10052-021-09878-zen_US
dc.identifier.issn1434-6044en_US
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85128586484en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-021-09878-z
dc.identifier.urihttps://hdl.handle.net/20.500.12713/2600
dc.identifier.volume82en_US
dc.identifier.wosWOS:000751762900004en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÇetin, Serkant Ali
dc.language.isoenen_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.titleObservation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detectoren_US
dc.typeArticleen_US

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