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

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). Search for exclusive Higgs and ℤ boson decays to φγ and ργ with the ATLAS detector. Journal of High Energy Physics, 2018(7) Springer 10.1007/JHEP07(2018)127

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

27 Jun 2019 08:05

Last Modified:

24 Oct 2019 20:09

Publisher DOI:

10.1007/JHEP07(2018)127

ArXiv ID:

1712.02758

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129086

URI:

https://boris.unibe.ch/id/eprint/129086

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