Sterile-active resonance: A global qualitative picture
Abstract In the νSM extended by adding an eV-scale sterile state, the (3 + 1) model, the sterile-active level crossing entails the MSW resonance, here referred as the sterile-active (SA) resonance. In this paper, we construct an effective theory of SA resonance which involves only the sterile-active...
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SpringerOpen
2025-04-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP04(2025)011 |
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| author | Mark Brettell Ivan Martinez-Soler Hisakazu Minakata |
| author_facet | Mark Brettell Ivan Martinez-Soler Hisakazu Minakata |
| author_sort | Mark Brettell |
| collection | DOAJ |
| description | Abstract In the νSM extended by adding an eV-scale sterile state, the (3 + 1) model, the sterile-active level crossing entails the MSW resonance, here referred as the sterile-active (SA) resonance. In this paper, we construct an effective theory of SA resonance which involves only the sterile-active mixing angles and ∆ m 41 2 $$ {m}_{41}^2 $$ , thanks to the given environment of high matter potential which freezes the νSM oscillations. We give our first attempt at an analytic treatment of the effective theory to illuminate the global picture of the SA resonance at a glance. We formulate a perturbative framework in which the structure of “texture zeros” of the S matrix in the flavor space and the suppression by the small parameters sin θ j4 (j = 1, 2, 3) allows us to reveal the flavor–event-type hierarchy of the resonance-effect strength in the probabilities. We have shown that the cascade events dominantly comes from the three paths through P(ν e → ν e ), P( ν ¯ e $$ {\overline{\nu}}_e $$ → ν ¯ e $$ {\overline{\nu}}_e $$ ), and P( ν ¯ μ $$ {\overline{\nu}}_{\mu } $$ → ν ¯ τ $$ {\overline{\nu}}_{\tau } $$ ), and a three-component fit is suggested to disentangle the SA resonance generation mechanisms. |
| format | Article |
| id | doaj-art-9b9dc1edc46746dea72b91031883e7c4 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | SpringerOpen |
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| series | Journal of High Energy Physics |
| spelling | doaj-art-9b9dc1edc46746dea72b91031883e7c42025-08-20T01:49:40ZengSpringerOpenJournal of High Energy Physics1029-84792025-04-012025414810.1007/JHEP04(2025)011Sterile-active resonance: A global qualitative pictureMark Brettell0Ivan Martinez-Soler1Hisakazu Minakata2Institute for Particle Physics Phenomenology, Durham UniversityInstitute for Particle Physics Phenomenology, Durham UniversityCenter for Neutrino Physics, Department of Physics, Virginia TechAbstract In the νSM extended by adding an eV-scale sterile state, the (3 + 1) model, the sterile-active level crossing entails the MSW resonance, here referred as the sterile-active (SA) resonance. In this paper, we construct an effective theory of SA resonance which involves only the sterile-active mixing angles and ∆ m 41 2 $$ {m}_{41}^2 $$ , thanks to the given environment of high matter potential which freezes the νSM oscillations. We give our first attempt at an analytic treatment of the effective theory to illuminate the global picture of the SA resonance at a glance. We formulate a perturbative framework in which the structure of “texture zeros” of the S matrix in the flavor space and the suppression by the small parameters sin θ j4 (j = 1, 2, 3) allows us to reveal the flavor–event-type hierarchy of the resonance-effect strength in the probabilities. We have shown that the cascade events dominantly comes from the three paths through P(ν e → ν e ), P( ν ¯ e $$ {\overline{\nu}}_e $$ → ν ¯ e $$ {\overline{\nu}}_e $$ ), and P( ν ¯ μ $$ {\overline{\nu}}_{\mu } $$ → ν ¯ τ $$ {\overline{\nu}}_{\tau } $$ ), and a three-component fit is suggested to disentangle the SA resonance generation mechanisms.https://doi.org/10.1007/JHEP04(2025)011Sterile or Heavy NeutrinosNeutrino MixingNon-Standard Neutrino Properties |
| spellingShingle | Mark Brettell Ivan Martinez-Soler Hisakazu Minakata Sterile-active resonance: A global qualitative picture Journal of High Energy Physics Sterile or Heavy Neutrinos Neutrino Mixing Non-Standard Neutrino Properties |
| title | Sterile-active resonance: A global qualitative picture |
| title_full | Sterile-active resonance: A global qualitative picture |
| title_fullStr | Sterile-active resonance: A global qualitative picture |
| title_full_unstemmed | Sterile-active resonance: A global qualitative picture |
| title_short | Sterile-active resonance: A global qualitative picture |
| title_sort | sterile active resonance a global qualitative picture |
| topic | Sterile or Heavy Neutrinos Neutrino Mixing Non-Standard Neutrino Properties |
| url | https://doi.org/10.1007/JHEP04(2025)011 |
| work_keys_str_mv | AT markbrettell sterileactiveresonanceaglobalqualitativepicture AT ivanmartinezsoler sterileactiveresonanceaglobalqualitativepicture AT hisakazuminakata sterileactiveresonanceaglobalqualitativepicture |