Search for exclusive Higgs and ℤ boson decays to φγ and ργ with the ATLAS detector

DOI
Publisher DOI
Abstract
A search for the exclusive decays of the Higgs and Z bosons to a φ or ρ 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 √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 φγ and ργ 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 φγ and ργ, respectively.
Date Issued
2018-07
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Rimoldi, Marco
Mullier, Geoffrey
Miucci, Antonio
Merlassino, Claudia
Meloni, Federico
Ereditato, Antonio
Additional Credits
Journal
Journal of High Energy Physics
Publisher
Springer
ISSN
1029-8479
Access(Rights)
open.access
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