29 May 2018 to 3 June 2018
Hyatt Regency Indian Wells Conference Center
US/Pacific timezone

Precision Constraints on Nuclear and Neutrino Reactions via Big Bang Nucleosynthesis

29 May 2018, 14:40
20m
North Foyer | Joshua Tree Room (Hyatt Regency Indian Wells Conference Center)

North Foyer | Joshua Tree Room

Hyatt Regency Indian Wells Conference Center

44600 Indian Wells Lane, Indian Wells, CA 92210, USA

Speaker

Dr Mark Paris (Los Alamos National Laboratory)

Description

Astronomical observations of high precision $(N_\mathrm{eff}, Y_P, \omega_b, D/H_P, \Sigma m_\nu)$ may soon over determine the cosmological standard model. An effort to constrain physics beyond the standard model with these observations is faced with the challenge of the interrelated problems of neutrino transport (via the quantum kinetic equations) and a stiff nuclear reaction network. We overview work on this topic, highlighting recent advances in our understanding of neutrino flavor evolution in the presence of their collisions with each other and matter in the early universe. We demonstrate, by concurrent solution of the neutrino and matter plasma evolution, percent-level effects on predicted deuterium abundances due to non-equilibrium distortions of the neutrino spectra, an order of magnitude larger than previous estimates. Preliminary results for coherent neutrino flavor evolution in the presence of collisions are also discussed.
E-mail [email protected]

Primary author

Dr Mark Paris (Los Alamos National Laboratory)

Co-authors

Prof. Chad Kishimoto (University of San Diego) Dr Daniel Blaschke (Los Alamos National Laboratory) Dr Evan Grohs (Los Alamos National Laboratory) Prof. George Fuller (University of California, San Diego) Luke Johns (UC San Diego) Dr Shashank Shalgar (Los Alamos National Laboratory) Dr Vincenzo Cirigliano (Los Alamos National Laboratory)

Presentation materials