| Full text | |
| Author(s): |
de Holanda, P. C.
Total Authors: 1
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 3, p. 18-pg., 2020-03-01. |
| Abstract | |
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 forbiden. 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 x 10(-19) eV and Gamma(8) < 7.1 x 10(-19) eV at 3 sigma. (AU) | |
| FAPESP's process: | 19/15600-0 - DARKWIN: Dark Matter and Weak Interactions Conference |
| Grantee: | Pedro Cunha de Holanda |
| Support Opportunities: | Research Grants - Meeting - Brazil |
| FAPESP's process: | 14/19164-6 - Challenges in the 21st century in neutrino physics and astrophysics |
| Grantee: | Orlando Luis Goulart Peres |
| Support Opportunities: | Special Projects |