Solar Neutrino Limits on Decoherence
| Autor: | de Holanda |
|---|---|
| Přispěvatelé: | UNIVERSIDADE ESTADUAL DE CAMPINAS |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Particle physics Quantum decoherence Solar and atmospheric neutrinos Solar neutrino Solar neutrinos FOS: Physical sciences Astronomy and Astrophysics Decoherence Neutrino properties Neutrino astrophysics Astrofísica de neutrinos Decoerência High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Artigo original Neutrinos solares |
| Zdroj: | Repositório da Produção Científica e Intelectual da Unicamp Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP Repositório Institucional da Unicamp |
| Popis: | The solar neutrino flux arrives at Earth as an incoherent admixture of mass eigenstates, and then solar neutrino detection constitute a blind probe to the oscillation pattern of the neutrino flavour conversion. Consequently, it is also impossible to probe, in a model independent approach, any new physics that leads to an enhancement of decoherence during the neutrino evolution, an effect that is present for instance in Open Quantum System formalism. However, such mechanism can also induce changes between mass eigenstates if an energy interchange between the neutrino subsystem and the reservoir is not explicitly forbidden. In this work the conversion probabilities between mass eigenstates in an Open Quantum System are calculated, and limits are stablished for these kind of transitions. We present our results in a pedagogical way, pointing out how far the analysis can go without any assumption on the neutrino conversion physics inside the Sun, before performing the full calculations. We obtain as limits for the decoherence parameters the values of $ \Gamma_3< 6.5\times 10^{-19}$ eV and $\Gamma_8< 7.1\times 10^{-19}$ eV at 3$\sigma$. Comment: 24 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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