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  • 标题:Using $K^0 \\rightarrow \\pi^- \\pi^-$ transitions to compute $K \\rightarrow (\\pi \\pi)_{I=0} $ decay amplitudes at NLO in the chiral expansion
  • 本地全文:下载
  • 作者:C. Kim ; C.T. Sachrajda
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2007
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:It is proposed to compute matrix elements for the (unphysical) K0p− →p− transition to determine the next-to-leading order low energy constants of the weak chiral Lagrangian. This allows us to evaluate K →(pp )I=0 decay amplitudes at this level of precision. This approach has several significant advantages over the use of K →pp transitions, most notably the elimination of s-channel disconnected diagrams and the use of fewer inversions.
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