Recent progress in calculation of $B_K$ using staggered fermions

Taegil Bae, Yong-Chull Jang, Hwancheol Jeong +11

We report on recent progress in the calculation of $B_K$ using HYP-smeared improved staggered fermions on the MILC asqtad lattices. We have added measurements on fine ($a\sim 0.09…