We present a study of B-parameters for generic ΔS=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 163×32×16 and 243×32×16 at the lattice spacing 1/a≈2GeV. 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.
@article{arxiv.hep-lat/0610075,
title = {Kaon $B$-parameters for Generic $\Delta S=2$ Four-Quark Operators in Quenched Domain Wall QCD},
author = {PACS Collaboration and Y. Nakamura and S. Aoki and M. Fukugita and N. Ishizuka and Y. Iwasaki and K. Kanaya and Y. Kuramashi and J. Noaki and M. Okawa and Y. Taniguchi and A. Ukawa and T. Yoshie},
journal= {arXiv preprint arXiv:hep-lat/0610075},
year = {2012}
}
Comments
7 pages, talk presented at Lattice2006 (Electroweak Decays and Mixing), PoS format