Abstract
One doublet of complex scalar fields is the minimal content of the Higgs sector in order to achieve spontaneous electroweak symmetry breaking and, in turn, to generate the masses of fundamental particles in the Standard Model. However, several theories beyond the Standard Model predict a nonminimal Higgs sector and introduce additional singlets, doublets or even higher-order weak isospin representations, thereby yielding additional Higgs bosons. With its high proton–proton collision energy (13 TeV during Run-2), the Large Hadron Collider opens a new window towards the exploration of extended Higgs sectors. This review article summarises the current state-of-the-art experimental results recently obtained in searches for new neutral and charged Higgs bosons with a partial or full Run-2 dataset.
Highlights
After the discovery of a Higgs boson with a mass of 125 GeV [1,2,3] at the Large HadronCollider (LHC) [4] in 2012, one of the main physics goals of the ATLAS [5] and CMS [6]experiments is to search for additional neutral and charged Higgs bosons
The two flagship H ± searches at the Large HadronCollider (LHC) have historically been conducted in the τν and tb decay channels, because they allow to cover complementary regions of the minimal supersymmetric extension of the SM (MSSM)
Given the large coupling between charged Higgs bosons and heavy fermions, especially in 2HDMs, such searches are performed in production modes involving the presence of additional heavy quarks, i.e., pp → tbH ±, leading to complex final states combining several detector signatures
Summary
After the discovery of a Higgs boson with a mass of 125 GeV [1,2,3] at the Large Hadron. Most theories beyond the SM enrich the Higgs sector with additional singlets, doublets and/or triplets of real or complex scalar fields, in turn predicting new physical spin-zero states, some neutral and some with an electric charge. This review article summarises the current state-of-the-art experimental results obtained by the ATLAS and CMS experiments in searches for new neutral and charged Higgs bosons based√. In. Section 3, neutral Higgs boson searches are categorised according to final states arising from decays of these new spin-zero particles to either fermions or bosons. Generic symbols are used for all particles, and charge-conjugation is always implied
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