Actions for One-loop matching of Delta S=2 four-quark operators with improved staggered fermions [electronic resource].

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One-loop matching of Delta S=2 four-quark operators with improved staggered fermions [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
11 pages : digital, PDF file
Additional Creators
Fermi National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We compute O(alpha{sub s}) lattice-to-continuum perturbative matching coefficients for the Delta S=2 flavor changing four-quark operators for the Asqtad improved staggered action. In conjunction with lattice simulations with three flavors of light, dynamical quarks, our results yield an unquenched determination of B{sub K}, the parameter that determines the amount of indirect CP violation in the neutral kaon system. Its value is an important input for the unitarity triangle analysis of weak decays.
Report Numbers
E 1.99:fermilab-pub-05-317-t
fermilab-pub-05-317-t
Subject(s)
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Note
Published through SciTech Connect.
07/01/2005.
"fermilab-pub-05-317-t"
"arXiv eprint number hep-lat/0507033"
Phys.Rev.D72:074506,2005 FT
Melnikov, Kirill; Becher, Thomas; Gamiz, Elvira.
Funding Information
AC02-76CH03000
View MARC record | catkey: 14707634