Improvement of the pion spectrum with HYP-smeared staggered fermions

Understand

We extend our previous study of taste-symmetry breaking using HYP-smeared staggered fermions in two ways.

• First, we improve the statistics of a comparison of unimproved and HYP-smeared staggered fermions on quenched lattices with $a\approx 0.1 $fm.
• This allows us to obtain a signal for all pion tastes, rather than just a subset, and thus to make a complete comparison.
• In addition, it allows us to differentiate between wall and local sources.