Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity
Abstract Axion-like particles (ALPs) arise in a variety of theoretical contexts and can, in general, mediate flavor violating interactions and parity non-conservation. We consider lepton flavor violating ALPs with GeV scale or larger masses which may, for example, arise in composite dark sector mode...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-02-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP02(2023)071 |
| _version_ | 1797779098028736512 |
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| author | Hooman Davoudiasl Roman Marcarelli Ethan T. Neil |
| author_facet | Hooman Davoudiasl Roman Marcarelli Ethan T. Neil |
| author_sort | Hooman Davoudiasl |
| collection | DOAJ |
| description | Abstract Axion-like particles (ALPs) arise in a variety of theoretical contexts and can, in general, mediate flavor violating interactions and parity non-conservation. We consider lepton flavor violating ALPs with GeV scale or larger masses which may, for example, arise in composite dark sector models. We show that a future Electron-Ion Collider (EIC) can uncover or constrain such ALPs via processes of the type e A Z → τ A Z a, where A Z is a nucleus of charge Z and a is an ALP in the range m τ ≤ m a ≲ 20 GeV. The production of the ALP can have a large Z 2 enhancement from low Q 2 electromagnetic scattering of the electron from a heavy ion. Using the gold nucleus (Z = 79) as an example, we show that the EIC can explore e − τ flavor violation, mediated by GeV-scale ALPs, well beyond current limits. Importantly, the EIC reach for this interaction is not sensitive to the lepton-flavor conserving ALP couplings, whose possible smallness can render searches using τ decays ineffective. We also discuss how the EIC electron beam polarization can provide a powerful tool for investigating parity violating ALPs. |
| first_indexed | 2024-03-12T23:25:54Z |
| format | Article |
| id | doaj.art-178cca1a44df4e55ba19fdbf31c406e7 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T23:25:54Z |
| publishDate | 2023-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-178cca1a44df4e55ba19fdbf31c406e72023-07-16T11:06:28ZengSpringerOpenJournal of High Energy Physics1029-84792023-02-012023211910.1007/JHEP02(2023)071Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunityHooman Davoudiasl0Roman Marcarelli1Ethan T. Neil2High Energy Theory Group, Physics Department, Brookhaven National LaboratoryDepartment of Physics, University of ColoradoDepartment of Physics, University of ColoradoAbstract Axion-like particles (ALPs) arise in a variety of theoretical contexts and can, in general, mediate flavor violating interactions and parity non-conservation. We consider lepton flavor violating ALPs with GeV scale or larger masses which may, for example, arise in composite dark sector models. We show that a future Electron-Ion Collider (EIC) can uncover or constrain such ALPs via processes of the type e A Z → τ A Z a, where A Z is a nucleus of charge Z and a is an ALP in the range m τ ≤ m a ≲ 20 GeV. The production of the ALP can have a large Z 2 enhancement from low Q 2 electromagnetic scattering of the electron from a heavy ion. Using the gold nucleus (Z = 79) as an example, we show that the EIC can explore e − τ flavor violation, mediated by GeV-scale ALPs, well beyond current limits. Importantly, the EIC reach for this interaction is not sensitive to the lepton-flavor conserving ALP couplings, whose possible smallness can render searches using τ decays ineffective. We also discuss how the EIC electron beam polarization can provide a powerful tool for investigating parity violating ALPs.https://doi.org/10.1007/JHEP02(2023)071Axions and ALPsLepton Flavour Violation (charged) |
| spellingShingle | Hooman Davoudiasl Roman Marcarelli Ethan T. Neil Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity Journal of High Energy Physics Axions and ALPs Lepton Flavour Violation (charged) |
| title | Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity |
| title_full | Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity |
| title_fullStr | Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity |
| title_full_unstemmed | Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity |
| title_short | Lepton-flavor-violating ALPs at the Electron-Ion Collider: a golden opportunity |
| title_sort | lepton flavor violating alps at the electron ion collider a golden opportunity |
| topic | Axions and ALPs Lepton Flavour Violation (charged) |
| url | https://doi.org/10.1007/JHEP02(2023)071 |
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