Kaon semileptonic decay form factors in two-flavor QCD

JLQCD Collaboration; N. Tsutsui; S. Aoki; M. Fukugita; S. Hashimoto; K-I. Ishikawa; N. Ishizuka; Y. Iwasaki; K. Kanaya; T. Kaneko; Y. Kuramashi; M. Okawa; A. Ukawa; N. Yamada; T. Yoshié

Kaon semileptonic decay form factors in two-flavor QCD

High Energy Physics - Lattice 2007-05-23 v1

Authors: JLQCD Collaboration , N. Tsutsui , S. Aoki , M. Fukugita , S. Hashimoto , K-I. Ishikawa , N. Ishizuka , Y. Iwasaki , K. Kanaya , T. Kaneko , Y. Kuramashi , M. Okawa , A. Ukawa , N. Yamada , T. Yoshié

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Abstract

We present a calculation of the kaon form factors in two-flavor QCD with the non-perturbatively $O(a)$ -improved Wilson quark action. In order to achieve a few percent accuracy in the study of SU(3) breaking effects, we use a set of double ratios of the matrix elements, with which the bulk of the statistical fluctuation and the multiplicative renormalization factors cancel.

Keywords

kaon form factors semileptonic decay two-flavor QCD Wilson fermions O(a) improvement

Cite

@article{arxiv.hep-lat/0510068,
  title  = {Kaon semileptonic decay form factors in two-flavor QCD},
  author = {JLQCD Collaboration and N. Tsutsui and S. Aoki and M. Fukugita and S. Hashimoto and K-I. Ishikawa and N. Ishizuka and Y. Iwasaki and K. Kanaya and T. Kaneko and Y. Kuramashi and M. Okawa and A. Ukawa and N. Yamada and T. Yoshié},
  journal= {arXiv preprint arXiv:hep-lat/0510068},
  year   = {2007}
}

Comments

6 pages, 7 figures, talk presented at Lattice2005 (Weak matrix elements)

Kaon semileptonic decay form factors in two-flavor QCD

Abstract

Keywords

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