Altas Energías

Cosmological Limits to Non-Standard Interactions of the Neutrino

by Dr. Abdel Pérez Lorenzana (CINVESTAV-IPN)

Wednesday, 25 January 2023 from to (Mexico/General)
at ICN-UNAM ( Salón de Seminarios de Gravitación y Altas Energías, A225. )
Para detalles de conexión contactar a alexis@nucleares.unam.mx
 Description Along with photons, neutrinos are the most abundant particles in the Universe. Despite being very light, they play a key role in cosmic evolution, impacting both the synthesis process of light nuclei, as well as the profile and amplitude of the cosmic microwave background perturbations. In addition, they contribute to fix the matter power spectrum through its role on baryon oscillations (BAO) and large-scale structure formation. Because of this, cosmological data provides a very useful channel to explore for some properties of the neutrinos. Standard cosmology is primarily sensitive to the number of neutrino species and the sum of their masses, while nucleosynthesis is also sensitive to the decoupling temperature of neutrino interactions. However, the possible existence of exotic neutrino interactions can effectively alter these parameters, offering the possibility of using cosmology to explore and derive observational bounds for non-standard neutrino physics. Along this talk we will comment on recent results regarding scalar mediated neutrino interactions. Evento presencial transmitido por Zoom en la siguiente liga: https://cuaieed-unam.zoom.us/j/84528020176?pwd=ODRubmFxN2V1UjAyYUJvTGRFbGxaQT09  Support Email: alexis@nucleares.unam.mx