GeV-scale neutrinos: interactions with mesons and DUNE sensitivity
Abstract The simplest extension of the SM to account for the observed neutrino masses and mixings is the addition of at least two singlet fermions (or right-handed neutrinos). If their masses lie at or below the GeV scale, such new fermions would be produced in meson decays. Similarly, provided they...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-08861-y |
| _version_ | 1818578466255142912 |
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| author | Pilar Coloma Enrique Fernández-Martínez Manuel González-López Josu Hernández-García Zarko Pavlovic |
| author_facet | Pilar Coloma Enrique Fernández-Martínez Manuel González-López Josu Hernández-García Zarko Pavlovic |
| author_sort | Pilar Coloma |
| collection | DOAJ |
| description | Abstract The simplest extension of the SM to account for the observed neutrino masses and mixings is the addition of at least two singlet fermions (or right-handed neutrinos). If their masses lie at or below the GeV scale, such new fermions would be produced in meson decays. Similarly, provided they are sufficiently heavy, their decay channels may involve mesons in the final state. Although the couplings between mesons and heavy neutrinos have been computed previously, significant discrepancies can be found in the literature. The aim of this paper is to clarify such discrepancies and provide consistent expressions for all relevant effective operators involving mesons with masses up to 2 GeV. Moreover, the effective Lagrangians obtained for both the Dirac and Majorana scenarios are made publicly available as FeynRules models so that fully differential event distributions can be easily simulated. As an application of our setup, we numerically compute the expected sensitivity of the DUNE near detector to these heavy neutral leptons. |
| first_indexed | 2024-12-16T06:46:15Z |
| format | Article |
| id | doaj.art-1d032e68269545b5a74a9d9925262637 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-16T06:46:15Z |
| publishDate | 2021-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-1d032e68269545b5a74a9d99252626372022-12-21T22:40:33ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-01-0181112410.1140/epjc/s10052-021-08861-yGeV-scale neutrinos: interactions with mesons and DUNE sensitivityPilar Coloma0Enrique Fernández-Martínez1Manuel González-López2Josu Hernández-García3Zarko Pavlovic4Instituto de Física Corpuscular, Universidad de Valencia and CSIC, Edificio Institutos InvestigaciónInstituto de Física Teórica, Universidad Autónoma de Madrid and CSICInstituto de Física Teórica, Universidad Autónoma de Madrid and CSICInstitute for Theoretical Physics, ELTE Eötvös Loránd UniversityFermi National Accelerator LaboratoryAbstract The simplest extension of the SM to account for the observed neutrino masses and mixings is the addition of at least two singlet fermions (or right-handed neutrinos). If their masses lie at or below the GeV scale, such new fermions would be produced in meson decays. Similarly, provided they are sufficiently heavy, their decay channels may involve mesons in the final state. Although the couplings between mesons and heavy neutrinos have been computed previously, significant discrepancies can be found in the literature. The aim of this paper is to clarify such discrepancies and provide consistent expressions for all relevant effective operators involving mesons with masses up to 2 GeV. Moreover, the effective Lagrangians obtained for both the Dirac and Majorana scenarios are made publicly available as FeynRules models so that fully differential event distributions can be easily simulated. As an application of our setup, we numerically compute the expected sensitivity of the DUNE near detector to these heavy neutral leptons.https://doi.org/10.1140/epjc/s10052-021-08861-y |
| spellingShingle | Pilar Coloma Enrique Fernández-Martínez Manuel González-López Josu Hernández-García Zarko Pavlovic GeV-scale neutrinos: interactions with mesons and DUNE sensitivity European Physical Journal C: Particles and Fields |
| title | GeV-scale neutrinos: interactions with mesons and DUNE sensitivity |
| title_full | GeV-scale neutrinos: interactions with mesons and DUNE sensitivity |
| title_fullStr | GeV-scale neutrinos: interactions with mesons and DUNE sensitivity |
| title_full_unstemmed | GeV-scale neutrinos: interactions with mesons and DUNE sensitivity |
| title_short | GeV-scale neutrinos: interactions with mesons and DUNE sensitivity |
| title_sort | gev scale neutrinos interactions with mesons and dune sensitivity |
| url | https://doi.org/10.1140/epjc/s10052-021-08861-y |
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