Co-Conveners: André de Gouvêa (Northwestern U.), Irina Mocioiu (Penn State U.), Saori Pastore (Washington U.), Louis Strigari (TAMU)

This topical group will concentrate on the theory of neutrinos physics including:

• Exploring the origin of neutrino masses. What is the physics responsible for nonzero neutrino masses? How does this physics connect to other outstanding questions in particle physics and cosmology
• Uncovering the fundamental physics of flavor: What precision is required to measure the neutrino oscillation parameters?
• Addressing current and future neutrino puzzles: Is there new physics behind the short-baseline anomalies?

We will also concentrate on different aspects of theory for neutrino physics including:

• Understanding astrophysical neutrino sources and how to extract different neutrino properties from cosmology
• Theoretical challenges associated with the computation of neutrino scattering on different targets and at different energy scales, including CEvNS, neutrino-nucleus scattering up to DIS, ultra-high energy neutrinos scattering on the atmosphere or propagating through the Earth
• Computation of nuclear-matrix elements for neutrinoless double-beta decays and related processes
• Neutrino propagation and flavor evolution in dense environments
• Establishing connections between searches for new phenomena at neutrino facilities and new-physics models.

April 28, 2020 meeting: Neutrino Theory - slides 1
May 13, 2020 meeting: Neutrino Theory - slides 2
June 4th, 2020 NF08+NFXXs meeting: Slide, Minutes