Type-II Seesaw Higgs triplet productions and decays at the LHC
Abstract 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 p...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-06-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP06(2025)020 |
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| author | Otilia A. Ducu Ana E. Dumitriu Adam Jinaru Romain Kukla Emmanuel Monnier Gilbert Moultaka Alexandra Tudorache Hanlin Xu |
| author_facet | Otilia A. Ducu Ana E. Dumitriu Adam Jinaru Romain Kukla Emmanuel Monnier Gilbert Moultaka Alexandra Tudorache Hanlin Xu |
| author_sort | Otilia A. Ducu |
| collection | DOAJ |
| description | Abstract 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. |
| format | Article |
| id | doaj-art-991ccb4553204442b8d38f07819e74d8 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-991ccb4553204442b8d38f07819e74d82025-08-20T03:42:43ZengSpringerOpenJournal of High Energy Physics1029-84792025-06-012025616110.1007/JHEP06(2025)020Type-II Seesaw Higgs triplet productions and decays at the LHCOtilia A. Ducu0Ana E. Dumitriu1Adam Jinaru2Romain Kukla3Emmanuel Monnier4Gilbert Moultaka5Alexandra Tudorache6Hanlin Xu7Horia Hulubei National Institute for Physics and Nuclear EngineeringHoria Hulubei National Institute for Physics and Nuclear EngineeringHoria Hulubei National Institute for Physics and Nuclear EngineeringNaval Electromagnetism LaboratoryCPPM, Aix-Marseille Université, CNRS/IN2P3Laboratoire Univers & Particules de Montpellier (LUPM), Université de Montpellier, CNRSHoria Hulubei National Institute for Physics and Nuclear EngineeringDepartment of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of ChinaAbstract 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.https://doi.org/10.1007/JHEP06(2025)020Multi-Higgs ModelsSpecific BSM PhenomenologyHiggs Production |
| spellingShingle | Otilia A. Ducu Ana E. Dumitriu Adam Jinaru Romain Kukla Emmanuel Monnier Gilbert Moultaka Alexandra Tudorache Hanlin Xu Type-II Seesaw Higgs triplet productions and decays at the LHC Journal of High Energy Physics Multi-Higgs Models Specific BSM Phenomenology Higgs Production |
| title | Type-II Seesaw Higgs triplet productions and decays at the LHC |
| title_full | Type-II Seesaw Higgs triplet productions and decays at the LHC |
| title_fullStr | Type-II Seesaw Higgs triplet productions and decays at the LHC |
| title_full_unstemmed | Type-II Seesaw Higgs triplet productions and decays at the LHC |
| title_short | Type-II Seesaw Higgs triplet productions and decays at the LHC |
| title_sort | type ii seesaw higgs triplet productions and decays at the lhc |
| topic | Multi-Higgs Models Specific BSM Phenomenology Higgs Production |
| url | https://doi.org/10.1007/JHEP06(2025)020 |
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