Type-II Seesaw Higgs triplet productions and decays at the LHC
The Type-II Seesaw Model provides an attractive scenario to account for Majorana-neutrino masses. Its extended Higgs sector, if sufficiently light, can have a rich and distinctive phenomenology at the LHC while yielding automatically an essentially Standard-Model-Higgs-like state. Several phenomenol...
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| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
18-10-2024
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The Type-II Seesaw Model provides an attractive scenario to account for
Majorana-neutrino masses. Its extended Higgs sector, if sufficiently light, can
have a rich and distinctive phenomenology at the LHC while yielding
automatically an essentially Standard-Model-Higgs-like state. Several
phenomenological studies have been devoted to the scalar sector of this model,
as well as experimental searches focusing mostly on the (doubly-)charged
states. In this paper we present an exhaustive study of the main production and
decay channels of all the non-standard scalar states originating from the
$SU(2)_L$ doublet and a complex triplet of the model. We stick to scenarios
where lepton-number-violating decays are suppressed, for which present
experimental limits are still weak, highlighting theoretical parameter
sensitivities that were not previously emphasized in the literature and the
uncertainties they can induce for the experimental searches at the LHC. A
comprehensive classification of the various cascade decays and corresponding
Standard Model particle multiplicities is provided. As an illustration, a
detailed prospective search study at the LHC with an ATLAS-like detector is
carried out on some benchmark points, for charged, doubly-charged, and, for the
first time, neutral state productions |
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| DOI: | 10.48550/arxiv.2410.14830 |