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
(2014) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 732, p. 8 (2014)
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- Abstract
- A search is reported for a neutral Higgs boson in the decay channel H→Zγ , Z→ℓ+ℓ− ( ℓ=e,μ ), using 4.5 fb −1 of pp collisions at s=7 TeV and 20.3 fb −1 of pp collisions at s=8 TeV , marc:recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ , 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 s=8 TeV at 95% confidence level.
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Tanasijczuk, A. J., ATLAS, & et al. (2014). 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, Section B: Nuclear, Elementary Particle and High-Energy Physics, 732, 8. https://doi.org/10.1016/j.physletb.2014.03.015 (Original work published 2014)