Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $B^0-\bar{B}^0$ mixing in quenched lattice QCD   We present our results of lattice calculations of $B$ parameters, which
parameterize $\Delta B$=2 transition amplitudes together with the leptonic
decay constant. Calculations are made in the quenched approximation at
$\beta$=5.7, 5.9, 6.0 and 6.1, using NRQCD action for heavy quark and the
$O(a)$-improved Wilson action for light quark. The operators are perturbatively
renormalized including the correction of $O(\alpha_s/(aM)^m)$ ($m\ge$0). We
examine the scaling behavior of $B$ parameters, and discuss the systematic
uncertainties based on the results with several different truncations of higher
order terms in 1/M and $\alpha_s$ expansions. We find
$B_{B_d}(m_b)=0.84(3)(5)$,
$B_{B_s}/B_{B_d}=1.020(21)(^{+15}_{-16})(^{+5}_{-0})$ and
$B_{S_s}(m_b)=0.85(1)(5)(^{+1}_{-0})$ in the quenched approximation. The errors
represent statistical and systematic as well as the uncertainty in the
determination of strange quark mass.

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The categories of this paper are: q-alg
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga