# Search for Higgs boson decays to a photon and a Z boson in pp collisions at sqrt(s)=7 and 8 TeV with the ATLAS detector

Abstract : A search is reported for a neutral Higgs boson in the decay channel H->Z gamma, Z->l+l- (l=e, mu), using 4.5 fb-1 of pp collisions at sqrt(s) = 7 TeV and 20.3 fb-1 of pp collisions at sqrt(s) = 8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, m(llgamma), is consistent with the Standard Model hypothesis in the investigated mass range of 120-150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120-150 GeV between 0.13 and 0.5 pb for sqrt(s)=8 TeV at 95% confidence level.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00946737
Contributor : Danielle Cristofol Connect in order to contact the contributor
Submitted on : Friday, February 14, 2014 - 9:25:14 AM
Last modification on : Sunday, June 26, 2022 - 12:00:50 PM

### Citation

G. Aad, L. Alio, M. Barbero, C. Bertella, J. C. Clémens, et al.. Search for Higgs boson decays to a photon and a Z boson in pp collisions at sqrt(s)=7 and 8 TeV with the ATLAS detector. Physics Letters B, Elsevier, 2014, 732, pp.8-27. ⟨10.1016/j.physletb.2014.03.015⟩. ⟨in2p3-00946737⟩

Record views