Towards string breaking with 2+1 dynamical fermions using the stochastic LapH method

TL;DR

This paper explores the application of the stochastic LapH method to compute static-light meson properties in 2+1 flavor QCD, providing insights into string breaking phenomena.

Contribution

It introduces the use of stochastic LapH for static-light meson correlation functions with 2+1 dynamical fermions, achieving precise mass estimates and preliminary mixing region analysis.

Findings

Successful extraction of static-light and static-strange masses

Preliminary estimate of the string breaking region

Good statistical precision in correlation functions

Abstract

We investigate the use of stochastically estimated light quark propagators in correlation functions involving a static color source. To this end we compute the static-light meson pseudoscalar correlation function in the stochastic LapH framework, using an ensemble of $N_f= 2+1$ gauge configurations generated through the CLS effort. We extract the static-light as well as the static-strange mass with good statistical precision. Together with the static potential, we obtain a preliminary estimate for the expected mixing region.