Jul 26 – 30, 2021
US/Eastern timezone

Determining properties of hyperons

Jul 28, 2021, 9:30 PM
Oral presentation Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions


Nolan Miller (University Of North Carolina at Chapel Hill)


Hyperon physics is expected to play a role in neutron stars, where the extreme neutron degeneracy pressure could push neutrons into hyperons; indeed, the composition of neutron stars contributes to the "softness" or "stiffness" of the equation of state, therefore setting limits on the possible sizes and masses of neutron stars. In this talk, I will present calculations of hyperonic observables, in particular the axial charges and masses. This work is based on a particular formulation of an SU(2) chiral perturbation theory for hyperons; determining the extent to which this effective field theory converges is instrumental in understanding the limits of its predictive power, especially since some hyperonic observables are difficult to calculate near the physical pion mass (eg, hyperon-to-nucleon form factors) and must be determined via an extrapolation to the physical point instead.

Primary authors

Grant Bradley Malcolm Lazarow (University of California, Berkeley) Nolan Miller (University Of North Carolina at Chapel Hill) Dr Henry Monge-Camacho (Univ. de Costa Rica) Amy Nicholson Pavlos Vranas (LLNL) Andre Walker-Loud (LBNL) Others

Presentation materials