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  • 标题:Computing the long-distance contribution to second order weak amplitudes
  • 本地全文:下载
  • 作者:N.H. Christ
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2010
  • 卷号:2010
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:The calculation of the long-distance contribution to the K0−K0 mass matrix is divided into three parts: First, the calculation of the matrix element between kaon states of the product of two space-time integrated, DS = 1, four-quark weak operators. Second an RI/MOM subtraction to remove the short distance part of this matrix element in a fashion consistent with the calculation of the physical short distance part. Third an application of the Lellouch-Luscher method, generalized to second order in the weak interactions, to control finite volume errors. Such an approach promises to permit accurate lattice calculation of the KL-KS mass difference and the long-distance contributions to eK.
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