@article{oai:tsukuba.repo.nii.ac.jp:00007816,
 author = {Ishikawa, K-I. and Yamada, N. and Aoki, S. and Fukugita, M. and Hashimoto, S. and Ishizuka, N. and Iwasaki, Y. and 岩崎, 洋一 and Kanaya, K. and Kaneda, T. and Kaya, S. and Kuramashi, Y. and Matsufuru, H. and Okawa, M. and Onogi, T. and Tominaga, S. and Tsutsui, N. and Ukawa, A. and 宇川, 彰 and Yoshie, T.},
 issue = {7},
 journal = {Physical review D},
 month = {Feb},
 note = {We present a lattice NRQCD study of the B meson decay constant in the quenched approximation with emphasis given to the scaling behavior. The NRQCD action and the heavy-light axial vector current we use include all terms of order 1/M and the perturbative O(αs a) and O(αs /M) corrections. Using simulations at three values of couplings β=5.7, 5.9, and 6.1 on lattices of sizes 12^3×32, 16^3×48, and 24^3×64, we find a significant a dependence disappears in fB if the O(αs a) correction is included in the axial vector current. We observe that β=5.9-6.1 is the window where systematic errors are expected to be minimum within one-loop improved theory. Our final results are fB=170(5)(15) MeV, fBs=191(4)(17)(-0+4) MeV, and fBs/fB=1.12(2)(1)(-0+3), where the first error is statistical, the second is systematic, and the third is due to the uncertainty of the strange quark mass, while quenching errors are not included.},
 title = {B meson leptonic decay constant with quenched lattice NRQCD},
 volume = {61},
 year = {2000}
}