A5064632982- Particle physics theoretical and experimental studies
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
Technical University of Munich
2023
Using a new sample of extremely metal poor systems, the EMPRESS survey has recently reported primordial helium abundance that is $3\sigma$ smaller than prediction from standard big bang nucleosynthesis (BBN) scenario. This measurement could be interpreted as hint for lepton asymmetry in electron neutrino flavor. Motivated by results, we present comprehensive analysis using measurements abundances elements, along with cosmic microwave background (CMB) data Planck. Assuming there no dark...
Using a new sample of extremely metal poor systems, the EMPRESS survey has recently reported primordial helium abundance that is $3σ$ smaller than prediction from standard big bang nucleosynthesis (BBN) scenario. This measurement could be interpreted as hint for lepton asymmetry in electron neutrino flavor. Motivated by results, we present comprehensive analysis using measurements abundances elements, along with cosmic microwave background (CMB) data Planck. Assuming there no dark radiation...