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Type: Journal article
Title: Searches for exclusive Higgs and Z boson decays into J/ψ γ, ψ(2S) γ, and ϒ(nS) γ at √s = 13 TeV with the ATLAS detector
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Adachi, S.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adiguzel, A.
Adye, T.
Affolder, A.A.
et al.
Citation: Physics Letters B, 2018; 786:134-155
Publisher: Elsevier
Issue Date: 2018
ISSN: 0370-2693
Statement of
M. Aaboud … D. Duvnjak … P. Jackson … J.L. Oliver … A. Petridis … A. Qureshi … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract: Searches for the exclusive decays of the Higgs and Z bosons into a J/ψ, ψ(2S), or ϒ(nS) (n = 1, 2, 3) meson and a photon are performed with a pp collision data sample corresponding to an integrated luminosity of 36.1fb⁻¹ collected at √s = 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above the expected backgrounds, and 95% confidence-level upper limits on the branching fractions of the Higgs boson decays to J/ψγ, ψ(2S) γ, and ϒ(nS) γ of 3.5 ×10⁻⁴, 2.0 × 10⁻³, and (4.9, 5.9, 5.7) × 10⁻⁴, respectively, are obtained assuming Standard Model production. The corresponding 95% confidence-level upper limits for the branching fractions of the Z boson decays are 2.3 × 10⁻⁶, 4.5 × 10⁻⁶ and (2.8, 1.7, 4.8) × 10⁻⁶, respectively.
Rights: © 2018 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP³.
RMID: 0030099057
DOI: 10.1016/j.physletb.2018.09.024
Appears in Collections:Physics publications

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