Excited states in the full QCD hadron spectrum on a $16^3 \times 40$ lattice

TL;DR

This paper presents a calculation of the hadron mass spectrum, including excited states, in full QCD on a lattice with specific parameters, providing insights into the spectrum's structure and dependence on quark masses.

Contribution

The study introduces a combined analysis method for extracting excited state masses in full QCD on a lattice, expanding the understanding of hadron spectra with different valence quark masses.

Findings

Calculated masses of excited states for $ ho$, $ ho$, and $N$ with quantum numbers matching ground states.

Analyzed the dependence of the hadron spectrum on a wide range of valence quark masses.

Provided detailed spectrum data on a $16^3 imes 40$ lattice at $eta=5.7$.

Abstract

We report the hadron mass spectrum obtained on a $16^3 \times 40$ lattice at $\beta = 5.7$ using two flavors of staggered fermions with $m a = 0.01$. We calculate the masses of excited states that have the same quantum numbers as the $\pi$, $\rho$ and $N$. They are obtained by a combined analysis of the hadron correlators from sources of size $16^3$ and $8^3$. We also report on the hadron spectrum for a wide range of valence quark masses.