MISC

1998年9月

K+->pi(+) pi(0) decay amplitude with the Wilson quark action in quenched lattice QCD

PHYSICAL REVIEW D
  • S Aoki
  • ,
  • M Fukugita
  • ,
  • S Hashimoto
  • ,
  • N Ishizuka
  • ,
  • Y Iwasaki
  • ,
  • K Kanaya
  • ,
  • Y Kuramashi
  • ,
  • M Okawa
  • ,
  • A Ukawa
  • ,
  • T Yoshie

58
5
開始ページ
054503/1-054503/9
終了ページ
記述言語
英語
掲載種別
出版者・発行元
AMER PHYSICAL SOC

We present a calculation for the K+ --> pi(+) pi(0) decay amplitude using a quenched simulation of lattice QCD with the Wilson quark action at beta = 6/g(2) = 6.1. The decay amplitude is extracted from the ratio, the K-->pi pi three-point function divided by either K and pi meson two-point functions or K meson two-point function and I = 2 pi pi four-point function; the two different methods yield consistent results. Finite size effects are examined with calculations made on 24(3) X 64 and 32(3) X 64 lattices, and are shown that they are explained by one-loop effects of chiral perturbation theory. The lattice amplitude is converted to the continuum value by employing a one-loop calculation of chiral perturbation theory, yielding a value in agreement with experiment if extrapolated to the chiral limit. We also report on the K meson B parameter B-K obtained from the K+ --> pi(+) pi(0) amplitude using chiral perturbation theory. [S0556-2821(98)03417-1]

リンク情報
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000075748700037&DestApp=WOS_CPL
ID情報
  • ISSN : 2470-0010
  • eISSN : 2470-0029
  • Web of Science ID : WOS:000075748700037

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