Document Detail

Kaon B Parameter from Improved Staggered Fermions in N_{f}=2+1 QCD.
MedLine Citation:
PMID:  23006074     Owner:  NLM     Status:  In-Data-Review    
We present a calculation of the kaon B parameter B_{K} using lattice QCD. We use improved staggered valence and sea fermions, the latter generated by the MILC Collaboration with N_{f}=2+1 light flavors. To control discretization errors, we use four different lattice spacings ranging down to a≈0.045  fm. The chiral and continuum extrapolations are done using SU(2) staggered chiral perturbation theory. Our final result is B[over ^]_{K}=0.727±0.004(stat)±0.038(syst), where the dominant systematic error is from our use of truncated (one-loop) matching factors.
Taegil Bae; Yong-Chull Jang; Chulwoo Jung; Hyung-Jin Kim; Jangho Kim; Jongjeong Kim; Kwangwoo Kim; Sunghee Kim; Weonjong Lee; Stephen R Sharpe; Boram Yoon;
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Publication Detail:
Type:  Journal Article     Date:  2012-07-24
Journal Detail:
Title:  Physical review letters     Volume:  109     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-09-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  041601     Citation Subset:  IM    
Korea Institute of Science and Technology Information, Daejeon, 305-806, South Korea.
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