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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 | Sanders, Stephen J. | |
dc.contributor.author | The CMS collaboration | |
dc.date.accessioned | 2021-01-18T19:28:58Z | |
dc.date.available | 2021-01-18T19:28:58Z | |
dc.date.issued | 2019-10-10 | |
dc.identifier.citation | The CMS collaboration., Sirunyan, A.M., Tumasyan, A. et al. Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at √𝑠 = 13 TeV. J. High Energ. Phys. 2019, 139 (2019). https://doi.org/10.1007/JHEP10(2019)139 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/31173 | |
dc.description | This work is licensed under a Creative Commons Attribution 4.0 International License. | 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.publisher | Springer Verlag | en_US |
dc.rights | Copyright CERN, for the benefit of the CMS Collaboration. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | 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 √𝑠 = 13 TeV | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Sanders, Stephen J. | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1007/JHEP10(2019)139 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |