Beautiful Majorana Higgses at colliders
Abstract We investigate a novel collider signature within the minimal Left-Right Symmetric Model, featuring a Higgs sector composed of a bi-doublet and two triplets. Our study focuses on a region of the parameter space where the SU(2) R charged gauge boson W R lies in the multi-TeV regime (3–100 TeV...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-06-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2025)254 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849334170909671424 |
|---|---|
| author | Benjamin Fuks Jonathan Kriewald Miha Nemevšek Fabrizio Nesti |
| author_facet | Benjamin Fuks Jonathan Kriewald Miha Nemevšek Fabrizio Nesti |
| author_sort | Benjamin Fuks |
| collection | DOAJ |
| description | Abstract We investigate a novel collider signature within the minimal Left-Right Symmetric Model, featuring a Higgs sector composed of a bi-doublet and two triplets. Our study focuses on a region of the parameter space where the SU(2) R charged gauge boson W R lies in the multi-TeV regime (3–100 TeV) and the additional Higgs states play a significant role. In this scenario, a heavy neutral Higgs boson ∆ with a dominant SU(2) R triplet component can be produced in association with either a Standard Model Higgs boson or a massive weak boson. The subsequent decay of the heavy Higgs into Majorana neutrinos N results in displaced lepton signatures, providing a striking manifestation of lepton number violation. Additionally, we explore how the production of b-jets in these processes can enhance hadron-collider sensitivity to such signals. A particularly compelling channel, pp → b b ¯ NN $$ pp\to b\overline{b} NN $$ , offers the exciting possibility of simultaneously probing the spontaneous mass origin of both Dirac fermions and Majorana states. Based on an optimised event selection strategy and state-of-the-art Monte Carlo simulations, we outline the expected reach at the HL-LHC and future colliders. Our findings demonstrate that this channel probes a region of parameter space where the neutral Higgs triplet and heavy neutrino masses are relatively light (m ∆ ≲ 250 GeV, m N ≲ 80 GeV), indirectly constraining the W R boson to the deep multi-TeV domain, with sensitivity extending up to 70–80 TeV, effectively turning the LHC into a precision machine. |
| format | Article |
| id | doaj-art-5662efdca1b14fc69183b29a6d86e407 |
| 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-5662efdca1b14fc69183b29a6d86e4072025-08-20T03:45:39ZengSpringerOpenJournal of High Energy Physics1029-84792025-06-012025613710.1007/JHEP06(2025)254Beautiful Majorana Higgses at collidersBenjamin Fuks0Jonathan Kriewald1Miha Nemevšek2Fabrizio Nesti3Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Université & CNRSJožef Stefan InstituteJožef Stefan InstituteDipartimento di Scienze Fisiche e Chimiche, Università dell’AquilaAbstract We investigate a novel collider signature within the minimal Left-Right Symmetric Model, featuring a Higgs sector composed of a bi-doublet and two triplets. Our study focuses on a region of the parameter space where the SU(2) R charged gauge boson W R lies in the multi-TeV regime (3–100 TeV) and the additional Higgs states play a significant role. In this scenario, a heavy neutral Higgs boson ∆ with a dominant SU(2) R triplet component can be produced in association with either a Standard Model Higgs boson or a massive weak boson. The subsequent decay of the heavy Higgs into Majorana neutrinos N results in displaced lepton signatures, providing a striking manifestation of lepton number violation. Additionally, we explore how the production of b-jets in these processes can enhance hadron-collider sensitivity to such signals. A particularly compelling channel, pp → b b ¯ NN $$ pp\to b\overline{b} NN $$ , offers the exciting possibility of simultaneously probing the spontaneous mass origin of both Dirac fermions and Majorana states. Based on an optimised event selection strategy and state-of-the-art Monte Carlo simulations, we outline the expected reach at the HL-LHC and future colliders. Our findings demonstrate that this channel probes a region of parameter space where the neutral Higgs triplet and heavy neutrino masses are relatively light (m ∆ ≲ 250 GeV, m N ≲ 80 GeV), indirectly constraining the W R boson to the deep multi-TeV domain, with sensitivity extending up to 70–80 TeV, effectively turning the LHC into a precision machine.https://doi.org/10.1007/JHEP06(2025)254Baryon/Lepton Number ViolationLeft-Right ModelsNew Gauge Interactions |
| spellingShingle | Benjamin Fuks Jonathan Kriewald Miha Nemevšek Fabrizio Nesti Beautiful Majorana Higgses at colliders Journal of High Energy Physics Baryon/Lepton Number Violation Left-Right Models New Gauge Interactions |
| title | Beautiful Majorana Higgses at colliders |
| title_full | Beautiful Majorana Higgses at colliders |
| title_fullStr | Beautiful Majorana Higgses at colliders |
| title_full_unstemmed | Beautiful Majorana Higgses at colliders |
| title_short | Beautiful Majorana Higgses at colliders |
| title_sort | beautiful majorana higgses at colliders |
| topic | Baryon/Lepton Number Violation Left-Right Models New Gauge Interactions |
| url | https://doi.org/10.1007/JHEP06(2025)254 |
| work_keys_str_mv | AT benjaminfuks beautifulmajoranahiggsesatcolliders AT jonathankriewald beautifulmajoranahiggsesatcolliders AT mihanemevsek beautifulmajoranahiggsesatcolliders AT fabrizionesti beautifulmajoranahiggsesatcolliders |