Production and decays of 146 GeV flavons into eμ final state at the LHC
Abstract The CMS experiment at CERN has reported a possible signal for a resonance at 146 GeV decaying into the eμ final state which, presently, is the only experimental hint for lepton flavour violation in any low- and high-energy experiment. The Froggatt-Nielsen mechanism naturally predicts the ex...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-11-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP11(2023)014 |
| _version_ | 1797199664072622080 |
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| author | Niko Koivunen Martti Raidal |
| author_facet | Niko Koivunen Martti Raidal |
| author_sort | Niko Koivunen |
| collection | DOAJ |
| description | Abstract The CMS experiment at CERN has reported a possible signal for a resonance at 146 GeV decaying into the eμ final state which, presently, is the only experimental hint for lepton flavour violation in any low- and high-energy experiment. The Froggatt-Nielsen mechanism naturally predicts the existence of new scalars, the flavons, with flavour off-diagonal couplings. We study this framework in the context of the CMS result and find that the minimal, purely leptophilic model is too restricted to match the claimed signal. Thereafter we show how models with additional flavon couplings to quarks can explain the claimed signal while satisfying all the existing constraints on lepton flavour violation. |
| first_indexed | 2024-03-11T12:44:29Z |
| format | Article |
| id | doaj.art-35d08f0e19bb4c25a45ffc1cb117a482 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-24T07:19:21Z |
| publishDate | 2023-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-35d08f0e19bb4c25a45ffc1cb117a4822024-04-21T11:06:35ZengSpringerOpenJournal of High Energy Physics1029-84792023-11-0120231111810.1007/JHEP11(2023)014Production and decays of 146 GeV flavons into eμ final state at the LHCNiko Koivunen0Martti Raidal1Laboratory of High Energy and Computational Physics, NICPBLaboratory of High Energy and Computational Physics, NICPBAbstract The CMS experiment at CERN has reported a possible signal for a resonance at 146 GeV decaying into the eμ final state which, presently, is the only experimental hint for lepton flavour violation in any low- and high-energy experiment. The Froggatt-Nielsen mechanism naturally predicts the existence of new scalars, the flavons, with flavour off-diagonal couplings. We study this framework in the context of the CMS result and find that the minimal, purely leptophilic model is too restricted to match the claimed signal. Thereafter we show how models with additional flavon couplings to quarks can explain the claimed signal while satisfying all the existing constraints on lepton flavour violation.https://doi.org/10.1007/JHEP11(2023)014Flavour SymmetriesLepton Flavour Violation (charged)Rare Decays |
| spellingShingle | Niko Koivunen Martti Raidal Production and decays of 146 GeV flavons into eμ final state at the LHC Journal of High Energy Physics Flavour Symmetries Lepton Flavour Violation (charged) Rare Decays |
| title | Production and decays of 146 GeV flavons into eμ final state at the LHC |
| title_full | Production and decays of 146 GeV flavons into eμ final state at the LHC |
| title_fullStr | Production and decays of 146 GeV flavons into eμ final state at the LHC |
| title_full_unstemmed | Production and decays of 146 GeV flavons into eμ final state at the LHC |
| title_short | Production and decays of 146 GeV flavons into eμ final state at the LHC |
| title_sort | production and decays of 146 gev flavons into eμ final state at the lhc |
| topic | Flavour Symmetries Lepton Flavour Violation (charged) Rare Decays |
| url | https://doi.org/10.1007/JHEP11(2023)014 |
| work_keys_str_mv | AT nikokoivunen productionanddecaysof146gevflavonsintoemfinalstateatthelhc AT marttiraidal productionanddecaysof146gevflavonsintoemfinalstateatthelhc |