Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons

Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Asilar, E. and Filipovic, Nicolas and Bencze, György and Hajdu, Csaba and Hidas, Pál and Horváth, Dezső and Siklér, Ferenc and Veszprémi, Viktor and Vesztergombi, György and Zsigmond, Anna Júlia and Karancsi, János and Molnár, József and Bartók, Márton and Makovec, Alajos and Ujvári, Balázs and Veres, Gábor (2015) Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons. JOURNAL OF HIGH ENERGY PHYSICS (10). ISSN 1126-6708

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Abstract

A search for a heavy Higgs boson in the H → WW and H → ZZ decay channels is reported. The search is based upon proton-proton collision data samples correspond- ing to an integrated luminosity of up to 5.1 fb−1 at √s = 7 TeV and up to 19.7 fb−1 at√s = 8 TeV, recorded by the CMS experiment at the CERN LHC. Several final states of the H → WW and H → ZZ decays are analyzed. The combined upper limit at the 95% confidence level on the product of the cross section and branching fraction exclude a Higgs boson with standard model-like couplings and decays in the range 145 < mH < 1000 GeV. We also interpret the results in the context of an electroweak singlet extension of the standard model.

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