Impact of neutrino oscillations on the r-process in different astrophysical scenarios
In this work, we studied the production of heavy-mass elements, through the rapid neutron-capture mechanism (r-process), associated with different astrophysical scenarios. Since the r-process consists on captures of neutrons followed by /3-decays, if sterile neutrinos exist, a reformulation of the w...
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| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/176396 |
| Aporte de: |
| Sumario: | In this work, we studied the production of heavy-mass elements, through the rapid neutron-capture mechanism (r-process), associated with different astrophysical scenarios. Since the r-process consists on captures of neutrons followed by /3-decays, if sterile neutrinos exist, a reformulation of the weak-decay rates due to the presence of massive neutrinos and sterile neutrinos, is needed. These rates are used to compute the abundances of the heavy elements produced in core-collapse supernova and neutron-star mergers and then ejected to the interstellar medium. We show how the abundances are affected if the active-sterile neutrino oscillations are considered in the formalism. We found that the best agreement between theoretical and experimental data is given when active-sterile neutrino mixing angle is sin2 (2^14) = 0.23 and when the neutron-star merger environment is dominant (about 70% of the production of the total heavy nuclei abundance). |
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