Hyperon Form Factors from N_f=2+1 QCD

TL;DR

This paper reports on lattice QCD calculations of hyperon form factors, utilizing new ensembles with 2+1 dynamical flavors and fixed singlet quark mass to improve the understanding of hyperon structure.

Contribution

The study introduces new lattice ensembles with fixed singlet quark mass and computes hyperon form factors using improved Wilson fermions.

Findings

Electromagnetic and semi-leptonic hyperon form factors obtained.

Simulations performed at physical quark masses.

Results provide insights into hyperon structure and QCD dynamics.

Abstract

We present results from the QCDSF/UKQCD collaboration for the electromagnetic and semi-leptonic form factors for the hyperons. The simulations are performed on our new ensembles generated with 2+1 flavours of dynamical O(a)-improved Wilson fermions. A unique feature of these configurations is that the quark masses are tuned so that the singlet quark mass is held fixed at its physical value. We use 5 such choices of the individual quark masses on 24^3x48 lattices with a lattice spacing of about 0.078 fm.