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ID 14428
file
creator
JLQCD, Collaboration
Yamada, N
Aoki, S
Burkhalter, R
Fukugita, M
Hashimoto, S
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneko, T
Kuramashi, Y
Onogi, T
Tominaga, S
Tsutsui, N
Ukawa, A
Yoshie, Y
subject
QCD calculation
NRQCD
B meson
B-parameters
NDC
Physics
abstract
We present a two-flavor dynamical QCD calculation of the B meson B parameters and decay constant. We use NRQCD for heavy quark and the nonperturbatively O(a)-improved Wilson action for light quark at β = 5.2 on a 203 × 48 lattice. We confirm that the sea quark effect increases the heavy-light decay constant, while estimate of its magnitude depends significantly on the fitting form in the chiral extrapolation. For the B parameters, on the other hand, we do not find a significant sea quark effect. The chiral extrapolation with logarithmic term is examined for both quantities and compared with the prediction of ChPT.
journal title
Nuclear Physics B - Proceedings Supplements
volume
Volume 106-107
start page
397
end page
399
date of issued
2002-03
publisher
Elsevier Science B.V.
issn
0920-5632
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2002 Elsevier Science B.V.
relation is version of URL
http://dx.doi.org/10.1016/S0920-5632(01)01726-1
department
Graduate School of Science