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Search for exclusive Higgs and Z boson decays to phi gamma and rho gamma with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0001-6945-1916
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8015-7512
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Number of Authors: 28832018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 7, article id 127Article in journal (Refereed) Published
Abstract [en]

A search for the exclusive decays of the Higgs and Z bosons to a phi or rho meson and a photon is performed with a pp collision data sample corresponding to an integrated luminosity of up to 35.6 fb(-1) collected at root s = 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. These decays have been suggested as a probe of the Higgs boson couplings to light quarks. No significant excess of events is observed above the background, as expected from the Standard Model. Upper limits at 95% confidence level were obtained on the branching fractions of the Higgs boson decays to phi gamma and rho gamma of 4.8 x 10(-4) and 8.8 x 10(-4), respectively. The corresponding 95% confidence level upper limits for the Z boson decays are 0.9 x 10(-6) and 25 x 10(-6) for phi gamma and rho gamma, respectively.

Place, publisher, year, edition, pages
Springer, 2018. no 7, article id 127
Keywords [en]
Hadron-Hadron scattering (experiments); Higgs physics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-233006DOI: 10.1007/JHEP07(2018)127ISI: 000439527200001Scopus ID: 2-s2.0-85050633004OAI: oai:DiVA.org:kth-233006DiVA, id: diva2:1237391
Note

QC 20180808

Available from: 2018-08-08 Created: 2018-08-08 Last updated: 2019-08-08Bibliographically approved

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Kastanas, Konstatinos A.Lund-Jensen, BengtOhm, ChristianRipellino, GiuliaSidebo, P. EdvinStrandberg, Jonas
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