15-19 June 2015
Asia/Novosibirsk timezone

Latest results on Higgs final-states with photons in ATLAS

15 Jun 2015, 11:05
Higgs and photons, electroweak and new physics Higgs and photons, electroweak and new physics


Dr Yohei Yamaguchi (Osaka University)


A measurement of the Higgs boson property with photon final states in proton-proton collisions with the ATLAS detector at the LHC is presented. The results are based on the data samples corresponds to integrated luminosities of 4.7 fb$^{-1}$ at $\sqrt{s}=7$ TeV in 2011 and 20.3 fb$^{-1}$ at $\sqrt{s}=8$ TeV in 2012. From a narrow resonance in diphoton mass spectrum, the mass of the Higgs boson is measured to be $m_{H} = 125.98 \pm 0.50$ GeV. The measured signal yield, which is a cross section times branching fraction normalised to the Standard Model expectation, is $1.17 \pm 0.27$. These results are based on improvements of photon energy reconstruction with the ATLAS detector.

Primary author

Dr Yohei Yamaguchi (Osaka University)

Presentation Materials