Neutral-Kaon Mixing from (2+1)-Flavor Domain-Wall QCD

D. antonio, P. boyle, T. Blum, N. christ, S. cohen, C. Dawson, T. Izubuchi, R. kenway, C. Jung, S. Li, M. lin, R. mawhinney, J. Noaki, S. Ohta, B. pendleton, E. scholz, A. Soni, R. tweedie, A. Yamaguchi

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We present the first results for neutral-kaon mixing using (2+1)-flavors of domain-wall fermions. A new approach is used to extrapolate to the physical up and down quark masses from our numerical studies with pion masses in the range 240–420 MeV; only SU(2)L×SU(2)R chiral symmetry is assumed and the kaon is not assumed to be light. Our main result is BKMS̅ (2  GeV)=0.524(10)(28) where the first error is statistical and the second incorporates estimates for all systematic errors.
Original languageEnglish
Article number032001
Number of pages4
JournalPhysical Review Letters
Issue number3
Publication statusPublished - 22 Jan 2008


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