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18 April 2024

» arxiv » hep-lat/0610075

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Kaon $B$-parameters for Generic $Delta S=2$ Four-Quark Operators in Quenched Domain Wall QCD
CP-PACS Collaboration ; Y.Nakamura ; S.Aoki ; M.Fukugita ; N.Ishizuka ; Y.Iwasaki ; K.Kanaya ; Y.Kuramashi ; J.Noaki ; M.Okawa ; Y.Taniguchi ; A.Ukawa ; T.Yoshie ;
Date:	12 Oct 2006
Journal:	PoS(LAT2006)089
Abstract:	We present a study of $B$-parameters for generic $Delta S=2$ four-quark operators in domain wall QCD. Our calculation covers all the $B$-parameters required to study the neutral kaon mixing in the standard model (SM) and beyond it. We evaluate one-loop renormalization factors of the operators employing the plaquette and Iwasaki gauge actions. Numerical simulations are carried out in quenched QCD with both gauge actions on $16^3 imes 32 imes 16$ and $24^3 imes 32 imes 16$ at the lattice spacing $1/aapprox 2$GeV. We investigate the relative magnitudes of the non-SM $B$-parameters to the SM one, which are compared with the previous results obtained with the overlap and the clover quark actions.
Source:	arXiv, hep-lat/0610075
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