# Topics in Light Hadron Mass Spectrum in Quenched QCD

## TL;DR

This paper investigates various aspects of the light hadron mass spectrum in quenched QCD, including flavor symmetry breaking, quenched chiral logs, decay constants, and quark masses, using different lattice actions and non-perturbative methods.

## Contribution

It provides a comparative analysis of light hadron properties in quenched QCD with Kogut-Susskind and Wilson actions, addressing key issues like chiral logs and decay constants.

## Key findings

- Evidence of flavor symmetry breaking effects.
- Observation of quenched chiral logarithms in pion mass data.
- Calculated quark masses consistent with previous estimates.

## Abstract

Several topics concerning the light hadron spectrum are discussed. Flavor symmetry breaking effects and the problem of quenched chiral logarithm are examined with pion mass data for the Kogut-Susskind quark action, and light meson decay constants for the Wilson action calculated with non-perturbative renormalization constants are discussed. Results for quark masses are also given both for the Kogut-Susskind and Wilson actions.