Résumé
If heavy neutrinos with mass mνH≥2me are produced in the Sun via the decay B8→Be8+e++νH in a side branch of the pp chain, they would undergo the observable decay into an electron, a positron and a light neutrino νH→ν L+e++e-. In the present work Borexino data are used to set a bound on the existence of such decays. We constrain the mixing of a heavy neutrino with mass 1.5 MeV≤mνH≤14 MeV to be |U eH|2≤(10-3-4×10-6), respectively. These are tighter limits on the mixing parameters than obtained in previous experiments at nuclear reactors and accelerators.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 072010 |
| journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 88 |
| Numéro de publication | 7 |
| Les DOIs | |
| état | Publié - 29 oct. 2013 |
| Modification externe | Oui |
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