BBN circa 2022: New Physics hints from the Early Universe?
APA
Valli, M. (2022). BBN circa 2022: New Physics hints from the Early Universe?. Perimeter Institute. https://pirsa.org/22100144
MLA
Valli, Mauro. BBN circa 2022: New Physics hints from the Early Universe?. Perimeter Institute, Oct. 28, 2022, https://pirsa.org/22100144
BibTex
@misc{ pirsa_PIRSA:22100144, doi = {10.48660/22100144}, url = {https://pirsa.org/22100144}, author = {Valli, Mauro}, keywords = {Particle Physics}, language = {en}, title = {BBN circa 2022: New Physics hints from the Early Universe?}, publisher = {Perimeter Institute}, year = {2022}, month = {oct}, note = {PIRSA:22100144 see, \url{https://pirsa.org}} }
Bang Nucleosynthesis (BBN) is one of the greatest outcome of the Standard Model of Particle Physics when put next to ΛCDM cosmology. In this talk, I will first review the key aspects of standard BBN and illustrate a new code -- PRyMordial -- to make state-of-the-art predictions of primordial light-element abundances within and beyond the Standard Model. I will then highlight the latest measurements regarding the primordial abundance of helium-4 and deuterium, and present evidence at the 2 sigma level for a nonzero lepton asymmetry from BBN data jointly with the Cosmic Microwave Background. I will leave some final comments on how a large total lepton asymmetry can be consistently realized in the Early Universe.
Zoom Link: https://pitp.zoom.us/j/95011247645?pwd=S0EwZG9nSHQvTjV0QjBxeHNUWWtmUT09