Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutral $B$ meson mixings and $B$ meson decay constants with static
  heavy and domain-wall light quarks   Neutral $B$ meson mixing matrix elements and $B$ meson decay constants are
calculated. Static approximation is used for $b$ quark and domain-wall fermion
formalism is employed for light quarks. The calculations are carried out on
$2+1$ flavor dynamical ensembles generated by RBC/UKQCD Collaborations with
lattice spacings $0.086$fm ($a^{-1}\sim 2.3$GeV) and $0.11$fm ($1.7$GeV), and a
fixed physical spatial volume of about $(2.7{\rm fm})^3$. In the static quark
action, link-smearings are used to improve the signal-to-noise ratio. We employ
two kinds of link-smearings, HYP1 and HYP2, and their results are combined in
taking the continuum limit. For the matching between the lattice and the
continuum theory, one-loop perturbative $O(a)$ improvements are made to reduce
discretization errors. As the most important quantity of this work, we obtain
SU(3) breaking ratio $\xi=1.208(60)$, where the error includes statistical and
systematic one. (Uncertainty from infinite $b$ quark mass is not included.) We
also find other neutral $B$ meson mixing quantities
$f_B\sqrt{\hat{B}_B}=240(22)$MeV, $f_{B_s}\sqrt{\hat{B}_{B_s}}=290(22)$MeV,
$\hat{B}_B=1.17(22)$, $\hat{B}_{B_s}=1.22(13)$ and $B_{B_s}/B_B=1.028(74)$, $B$
meson decay constants $f_B=219(17)$MeV, $f_{B_s}=264(19)$MeV and
$f_{B_s}/f_B=1.193(41)$, in the static limit of $b$ quark, which do not include
infinite $b$ quark mass uncertainty.

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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg