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Numerical Study of K0--K0 Mixing and BK

1996/08/15 by Weonjong Lee, Lee, Weonjong, Markus Klomfass +1
Mathematics · Physics and Astronomy · #Advanced Mathematical Physics Problems #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-lat/9608089

51 pages, latex, 21 figures, uses epsf.sty, submitted to Phys. Rev. D

arxiv created 1996/08/15 · openalex publication_date 1996/08/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have computed BK with staggered fermions, using two different methods: both in the one spin trace form and two spin trace form. Renormalized results in both forms are in good agreement. The numerical simulations were performed on a 163 × 40 lattice in full QCD with β= 5.7 . We also tried an improved wall source method in order to select only the pseudo-Goldstone bosons and compare the numerical results obtained with those from the conventional wall source method. We have studied BK with a series of non-degenerate quark anti-quark pairs and saw no effect on BK , although dramatic effects in the chiral limit were seen on the individual terms making up BK .

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