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
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.
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