Search for exclusive Higgs and Z boson decays to phi gamma and rho gamma with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2874 more authors) (2018) Search for exclusive Higgs and Z boson decays to phi gamma and rho gamma with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 07 (7). 127-.

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Abstract

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 $\sqrt{s}=13$ 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 $5.0\times10^{-4}$ and $10.4\times10^{-4}$, respectively. The corresponding 95$\% $ confidence level upper limits for the $Z$ boson decays are $0.7\times10^{-6}$ and $4.0\times10^{-6}$ for $\phi\gamma$ and $\rho\gamma$, respectively.

Item Type: Article
Additional Information: 36 pages in total, author list starting page 20, 5 figures, 3 tables, published in JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2016-13/
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Higgs physics
Depositing User: Symplectic Admin
Date Deposited: 20 Aug 2018 08:26
Last Modified: 18 Jan 2024 15:59
DOI: 10.1007/JHEP07(2018)127
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3025274