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Search for the associated production of the Higgs boson with a top-quark pair
Journal article   Open access   Peer reviewed

Search for the associated production of the Higgs boson with a top-quark pair

CMS collaboration, Vardan Khachatryan, Cécile Caillol, Barbara Clerbaux, Gilles Lentdecker, Didar Dobur, Laurent Favart, Arnaud Gay, Anastasia Grebenyuk, Alexandre Leonard, …
Journal of High Energy Physics, Vol.2014(9), 87
10/01/2014
DOI: 10.1007/JHEP09(2014)087
url
https://doi.org/10.1007/JHEP09(2014)087View
Published (Version of record) Open Access

Abstract

A search for the standard model Higgs boson produced in association with a top-quark pair (tt¯H) is presented, using data samples corresponding to integrated luminosities of up to 5.1 fb−1 and 19.7 fb−1 collected in pp collisions at center-of-mass energies of 7 TeV and 8 TeV respectively. The search is based on the following signatures of the Higgs boson decay: H → hadrons, H → photons, and H → leptons. The results are characterized by an observed tt¯H signal strength relative to the standard model cross section, μ=σ/σ SM,under the assumption that the Higgs boson decays as expected in the standard model. The best fit value is μ = 2.8 ± 1.0 for a Higgs boson mass of 125.6 GeV.
Physique des particules élémentaires

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