Abstract
A search for the standard model Higgs boson decaying to tau pairs is presented using data collected in 2011 and 2012 with the CMS detector at the LHC. The topologies studied represent three or four lepton final states, where the Higgs boson is produced in association with the leptonic decay of aWor Z boson, respectively. The analyses use collision data samples corresponding to integrated luminosities of 5 fb-1 collected at √s = 7 TeV and 12 fb-1 of 8 TeV. Upper limits between 2.7 and 5.5 times the standard model prediction are established on the product of Higgs boson cross section and tau pair decay branching fraction for Higgs masses between 110 and 145 GeV. © Owned by the authors, published by EDP Sciences, 2013.
Highlights
A resonance consistent with a SM Higgs boson with a mass of about 125 GeV has been observed with a significance of 5.0σ (5.9σ) at the Compact Muon Solenoid (CMS) [1] (ATLAS [2]) experiments
In this document we present additional searches for the Higgs boson decaying to a tau pair, in two final state topologies, where the Higgs boson is produced in association with the leptonic decay of a W or Z boson[4]
The cross section production for the SM Higgs via associated production mechanism is an order of magnitude lower than that of the gluon-gluon fusion, the presence of isolated high momentum leptons originating from W and
Summary
A resonance consistent with a SM Higgs boson with a mass of about 125 GeV has been observed with a significance of 5.0σ (5.9σ) at the CMS [1] (ATLAS [2]) experiments. To remove the large background from Z → LL events with a quark or gluon jet misidentified as a τ candidate, the two light leptons (eμ, μμ) are required to have the same charge. The lepton candidates in reducible background events have a softer pT spectrum than those coming from Higgs boson production. The search for ZH production is performed in four-lepton events with a reconstructed pair of electrons or muons consistent with the decay of a Z boson, and a tau pair (Higgs boson) candidate. To reduce the contribution from Z+jets backgrounds, muons are required to have I/pT < 0.15(0.30) in the μτh ( eμ) channel, electrons are required to have I/pT < 0.10(0.30) in the eτh ( eμ) channel, and τh candidates are required to pass the tight (medium) combined isolation in the τhτh ( eτh, μτh) channels
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