• Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars

August 26, 2025 2:00 PM
PAIS 3205

Host:

Huaiyu Duan

Presenter:

Stefan Sandner (LANL)

Neutrinos are not only the most elusive particles of the Standard Model, but the observation of their flavor oscillation stand out as the first and only laboratory evidence for new physics. Complementary to laboratory experiments, precise measurements of the cosmological expansion history of our Universe provide a new and attractive window to test neutrino properties.

In this talk I will review some of the latest advances in the field of neutrino cosmology, with highlights on the following three epochs: i) The very early Universe in which neutrinos may be the responsible source for the creation of the observed matter anti-matter asymmetry; ii) Big Bang Nucleosynthesis and the role of asymmetries in the creation of the primordial elements; iii) The cosmic microwave background and its ability to probe the unknown neutrino masses and hidden neutrino interactions.