Abstract
The final ATLAS Run 1 measurements of Higgs boson production and couplings in the decay channel , where , or , are presented. These measurements were performed using collision data corresponding to integrated luminosities of 4.5 and at center-of-mass energies of 7 and 8 TeV, respectively, recorded with the ATLAS detector at the LHC. The signal is observed with a significance of 8.1 standard deviations, with an expectation of 6.2 standard deviations, at , the combined ATLAS measurement of the Higgs boson mass from the and channels. The production rate relative to the Standard Model expectation, the signal strength, is measured in four different production categories in the channel. The measured signal strength, at this mass, and with all categories combined, is . The signal strength for Higgs boson production in gluon fusion or in association with or pairs is found to be , while the signal strength for vector-boson fusion combined with associated production is found to be .
14 More- Received 22 August 2014
DOI:https://doi.org/10.1103/PhysRevD.91.012006
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© 2015 CERN, for the ATLAS Collaboration