A search is reported for Higgs boson decay to μ+μ-using data with an integrated luminosity of 24.8fb-1collected with the ATLAS detector in ppcollisions at √s=7 and8TeVat the CERN Large Hadron Collider. The observed dimuon invariant mass distribution is consistent with the Standard Model background-only hypothesis in the 120-150GeV search range. For a Higgs boson with a mass of 125.5GeV, the observed (expected) upper limit at the 95% confidence level is 7.0 (7.2) times the Standard Model expectation. This corresponds to an upper limit on the branching ratio BR(H→μ+μ-)of 1.5 × 10-3.

Search for the standard model higgs boson decay to μ+μ- with the ATLAS detector

COBAL, Marina;GIORDANI, Mario;Monzani, S.;
2014-01-01

Abstract

A search is reported for Higgs boson decay to μ+μ-using data with an integrated luminosity of 24.8fb-1collected with the ATLAS detector in ppcollisions at √s=7 and8TeVat the CERN Large Hadron Collider. The observed dimuon invariant mass distribution is consistent with the Standard Model background-only hypothesis in the 120-150GeV search range. For a Higgs boson with a mass of 125.5GeV, the observed (expected) upper limit at the 95% confidence level is 7.0 (7.2) times the Standard Model expectation. This corresponds to an upper limit on the branching ratio BR(H→μ+μ-)of 1.5 × 10-3.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/1109936
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