Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at root s=13 TeV
| dc.WoS.categories | Physics, Particles & Fields | en_US |
| dc.authorid | 0000-0002-9007-8260 | en_US |
| dc.contributor.author | Yetkin, Elif Aslı | |
| dc.date.accessioned | 2020-05-27T19:50:43Z | |
| dc.date.available | 2020-05-27T19:50:43Z | |
| dc.date.issued | 2019-10-10 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | 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.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1007/JHEP10(2019)139 | en_US |
| dc.identifier.issn | 1029-8479 | |
| dc.identifier.scopus | 2-s2.0-85074147634 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/2098 | |
| dc.identifier.uri | https://doi.org/10.1007/JHEP10(2019)139 | |
| dc.identifier.wos | WOS:000492982300001 | en_US |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.issue | 139 | en_US |
| dc.language.iso | en | en_US |
| dc.national | International | en_US |
| dc.numberofauthors | 500+ | en_US |
| dc.publisher | Springer | en_US |
| dc.relation.ispartof | Journal Of High Energy Physics | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | 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.volume | 10 | en_US |
