Search for the Standard Model Higgs boson in the $H \rightarrow Z\gamma$ decay mode with pp collisions at $\sqrt{s} =$ 7 and 8 TeV - INSPIRE

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Search for the Standard Model Higgs boson in the $H \rightarrow Z\gamma$ decay mode with pp collisions at $\sqrt{s} =$ 7 and 8 TeV

ATLAS

Collaboration

Mar 6, 2013

22 pages

Report number:

ATLAS-CONF-2013-009

Experiments:

CERN-LHC-ATLAS

View in:

CERN Document Server

reference search82 citations

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Abstract:

This note presents a search for the Standard Model Higgs boson in the decay channel

H \rightarrow Z\gamma

,

Z \rightarrow ℓℓ

, where

ℓ=e

or

\mu

, using 20.7

fb^{−1}

of proton-proton collisions at

\sqrt{s} =

8 TeV and 4.6

fb^{−1}

of proton-proton collisions at

\sqrt{s}=7

TeV recorded with the ATLAS detector at the LHC. The distribution of the difference

\Delta m

between the final state three-body invariant mass

m_{ℓℓ\gamma}

and the di-lepton invariant mass

m_{ℓℓ}

is compared to Standard Model background expectations. No significant deviation from the SM prediction is observed and upper limits on the cross section of a Higgs boson with a mass between 120 and 150 GeV are derived. The expected exclusion limits at 95% confidence level range between 7.3 and 22 times the predicted Standard Model cross section. The observed exclusion limits range between 5.4 and 37 times the Standard Model cross section. For a Higgs boson mass of 125 GeV, the expected and observed limits are 13.5 and 18.2 times the Standard Model, respectively.

Note:

Preliminary results

HIGGS
p p: scattering
Higgs particle: decay modes
background
ATLAS
standard model
Higgs particle --> Z0 photon

References(73)

Figures(0)

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