Abstract
In several theories beyond the Standard Model, the Higgs sector consists of more than one complex scalar doublet. For instance, supersymmetric models such as the MSSM have five physical Higgs states: two charged and three neutral. In this paper, a review of the searches for new neutral and charged Higgs bosons at the Large Hadron Collider, with the ATLAS experiment, is presented.
Highlights
In the Standard Model (SM), only one doublet of Higgs complex scalars is responsible for the electroweak symmetry breaking
Detailed investigations are conducted in order to determine whether this new particle is the SM Higgs boson, or a Higgs boson
The Minimal Supersymmetric extension of the Standard Model (MSSM) Higgs sector is fully defined by the mass of one of the Higgs bosons and tan β, the ratio of the two Higgs vacuum expectation values
Summary
In the Standard Model (SM), only one doublet of Higgs complex scalars is responsible for the electroweak symmetry breaking. A new neutral boson with Higgs-like properties has been observed by both the ATLAS and CMS experiments at the Large Hadron Collider (LHC), with a mass of 125–126 GeV [1, 2]. A multivariate algorithm combining information from the impact parameter of associated tracks and the reconstruction of b- and c-hadron decay vertices is used in order to identify jets initiated by b-quarks, within |η| < 2.5. In order to reconstruct hadronically decaying τ leptons, anti-kt jets with either one or three associated tracks are considered as τ candidates, with a different calibration than hadronic jets. Discriminant, with “loose”, “medium” and “tight” selections depending on the efficiency for hadronically decaying τ leptons and on the rejection factor against quark- and gluon-initiated jets [11]. Selected τ candidates fulfilling the identification criteria are referred to as “τ jets”
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