# The hyperon spectrum from lattice QCD

Hyperon decays present a promising alternative for extracting $\vert V_{us} \vert$ from lattice QCD combined with experimental measurements. Currently $\vert V_{us} \vert$ is determined from the kaon decay widths and a lattice calculation of the associated form factor. In this proceeding, I will present preliminary work on a lattice determination of the hyperon mass spectrum. I will additionally summarize future goals in which we will calculate the hyperon transition matrix elements, which will provide an alternative means for accessing $\vert V_{us} \vert$. This work is based on a particular formulation of 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 (e.g., hyperon-to-nucleon form factors), and thus the use of heavier than physical pion masses is likely to yield more precise results when combined with extrapolations to the physical point.

## The hyperon spectrum from lattice QCD

[arXiv:2201.01343]

## $V_{us}$ from the lattice [talk]

Los Alamos National Lab [invited talk] [PDF of slides]

## The nucleon mass and sigma term from lattice QCD [talk]

Chiral Dynamics 2021 bulletin [PDF of slides]

## lsqfit-gui

Graphical user interface for lsqfit using dash.

## Determining properties of hyperons [talk]

Lattice 2021 bulletin [PDF of slides]

## $V_{us}$ from semileptonic hyperon decays [poster]

Director’s review of the Nuclear Science Division [PDF of poster]

## Scale setting with $m_\Omega$

Python code for our scale setting analysis.

## Scale setting the Möbius Domain Wall Fermion on gradient-flowed HISQ action using the Omega baryon mass and the gradient-flow scales $t_0$ and $w_0$

Phys. Rev. D 103, 054511 (2021) [arXiv:2011.12166]

## Lattice calculation of $F_K/F_\pi$ from a mixed domain-wall on HISQ action [talk]

American Physical Society bulletin [PDF of slides]

## spacetime-plots

A python noteboook for plotting points and lines, expressly written for making spacetime diagrams. To get started with a tutorial, launch the binder inst...

## $F_K/F_\pi$ from MDWF on HISQ
Python code for our $F_K/F_\pi$ analysis.