Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector

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Abstract

A search for the decays of the Higgs and Z bosons to J/ψγ and Υ(nS)γ (n=1,2,3) is performed with
pp collision data samples corresponding to integrated luminosities of up to 20.3 fb−1 collected at √s=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/ψγ final state the limits are 1.5×10−3 and 2.6×10−6 for the Higgs and
Z boson decays, respectively, while in the Υ(1S,2S,3S)γ final states the limits are (1.3,1.9,1.3)×10−3 and
(3.4,6.5,5.4)×10−6, respectively.
Original languageEnglish
Article number121801
Number of pages19
JournalPhysical Review Letters
Volume114
Issue number12
DOIs
Publication statusPublished - 26 Mar 2015

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