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

Calculating $B_K$ using HYP staggered fermions

High Energy Physics - Lattice 2010-01-21 v2

Authors: 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.

Cite

@article{arxiv.0809.1220,
  title  = {Calculating $B_K$ using HYP staggered fermions},
  author = {Taegil Bae and Hyung-Jin Kim and Jongjeong Kim and Kwangwoo Kim and Boram Yoon and Weonjong Lee and Chulwoo Jung and Stephen R. Sharpe},
  journal= {arXiv preprint arXiv:0809.1220},
  year   = {2010}
}

Comments

7 pages, 4 figures, Lattice 2008 proceeding

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