Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at √s = 13 TeV
dc.contributor.author | Sirunyan, A. M. | |
dc.contributor.author | Işıldak, Bora | |
dc.date.accessioned | 2020-06-29T08:20:08Z | |
dc.date.available | 2020-06-29T08:20:08Z | |
dc.date.issued | 2019-10-10 | |
dc.identifier.issn | 1029-8479 | en_US |
dc.identifier.uri | http://hdl.handle.net/10679/6655 | |
dc.identifier.uri | https://link.springer.com/article/10.1007/JHEP10(2019)139 | |
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.description.sponsorship | BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece)NKFIA (Hungary) DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.). | |
dc.language.iso | eng | en_US |
dc.publisher | Springer Nature | en_US |
dc.relation.ispartof | Journal of High Energy Physics | |
dc.rights | openAccess | |
dc.title | Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at √s = 13 TeV | en_US |
dc.type | Article | en_US |
dc.description.version | Publisher version | en_US |
dc.peerreviewed | yes | en_US |
dc.publicationstatus | Published | en_US |
dc.contributor.department | Özyeğin University | |
dc.contributor.authorID | (ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora | |
dc.contributor.ozuauthor | Işıldak, Bora | |
dc.creator | The CMS Collaboration | |
dc.identifier.issue | 10 | en_US |
dc.identifier.wos | WOS:000492982300001 | |
dc.identifier.doi | 10.1007/JHEP10(2019)139 | en_US |
dc.subject.keywords | Beyond standard model | en_US |
dc.subject.keywords | Hadron-Hadron scattering (experiments) | en_US |
dc.subject.keywords | Photon production | en_US |
dc.identifier.scopus | SCOPUS:2-s2.0-85074147634 | |
dc.contributor.authorMale | 1 | |
dc.relation.publicationcategory | Article - International Refereed Journal - Institution Academic Staff |
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