Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: B meson decay constant from quenched Lattice QCD   A lattice QCD calculation of the B meson decay constant is presented. In
order to investigate the scaling violation associated with the heavy quark,
parallel simulations are carried out employing both Wilson and the
O(a)-improved clover actions for the heavy quark. The discretization errors due
to the large $b$ quark mass are estimated in a systematic way with the aid of
the non-relativistic interpretation approach of El-Khadra, Kronfeld and
Mackenzie. As our best value from the quenched simulations at $\beta$=5.9, 6.1
and 6.3 we obtain $f_B$=163$\pm$16 MeV and $f_{B_s}$=175$\pm$18 MeV in the
continuum limit where the error includes both statistical and systematic
uncertainties.

9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys