dc.contributor.author | Sirunyan, A. M. | |
dc.contributor.author | Tumasyan, A. | |
dc.contributor.author | Adam, W. | |
dc.contributor.author | Ambrogi, F. | |
dc.contributor.author | Bergauer, T. | |
dc.contributor.author | Brandstetter, J. | |
dc.contributor.author | Özdemir, Kadri | |
dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2021-06-05T20:00:48Z | |
dc.date.available | 2021-06-05T20:00:48Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 1029-8479 | |
dc.identifier.uri | https://doi.org/10.1007/JHEP10(2019)139 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12960/1001 | |
dc.description | WOS:000492982300001 | en_US |
dc.description.abstract | A search is presented for a Higgs boson that is produced in association with a Z boson and that decays to an undetected particle together with an isolated photon. The search is performed by the CMS Collaboration at the Large Hadron Collider using a data set corresponding to an integrated luminosity of 137 fb(-1) recorded at a center-of-mass energy of 13 TeV. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for associated Higgs and Z boson production and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a mass of 125 GeV, assuming the standard model production cross section, this corresponds to an observed (expected) upper limit on this branching fraction of 4.6 (3.6)% at 95% confidence level. These are the first limits on Higgs boson decays to final states that include an undetected massless dark photon. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.relation.ispartof | Journal on High Energy Physics | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Beyond Standard Model | en_US |
dc.subject | Hadron-Hadron Scattering (Experiments) | en_US |
dc.subject | Photon Production | en_US |
dc.title | Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at root s=13 TeV | en_US |
dc.type | article | en_US |
dc.authorid | 0000-0002-0103-1488 | |
dc.department | Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü | en_US |
dc.contributor.institutionauthor | Özdemir, Kadri | |
dc.identifier.doi | 10.1007/JHEP10(2019)139 | |
dc.identifier.issue | 10 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |