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arXiv · 0809.1220

Calculating $B_K$ using HYP staggered fermions

Taegil Bae·Hyung-Jin Kim·Jongjeong Kim·Kwangwoo Kim·Boram Yoon·Weonjong Lee·Chulwoo Jung·Stephen R. Sharpe
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Abstract

We give an update on our calculation of $B_K$ using HYP-smeared valence staggered quarks. We have results for $B_K$ at tree-level on several coarse MILC lattices ($a\approx 0.12 $fm) and one of the fine lattices ($a\approx 0.09 $fm), using 10 light valence quarks ranging down to $m_s^{\rm phys}/10$. We have generalized staggered chiral perturbation theory to our mixed action setup, and outline the results. We explain our present fitting strategy, and give some preliminary results.

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Taegil Bae, Hyung-Jin Kim, Jongjeong Kim, Kwangwoo Kim, Boram Yoon, Weonjong Lee, Chulwoo Jung, Stephen R. Sharpe. 2008-09-10. Calculating $B_K$ using HYP staggered fermions. https://arxiv.org/abs/0809.1220

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