Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing New Physics in $B\to K^{(*)} \ell^+\ell^-$ decays   We study the exclusive decays of $B\to K^{(*)}\ell^+ \ell^-$ by the results
in the perturbative QCD with the heavy quark effective theory and lattice
calculations. We obtain the form factors for the $B\to K^{(*)}$ transitions in
the whole allowed region. Our predictions on the branching ratios of $B\to K
\ell^{+} \ell^{-}$, $B\to K^{*} e^{+}e^{-}$, and $B\to K^{*} \mu^{+} \mu^{-}$
are $0.53\pm 0.05 ^{+0.10}_{-0.07}$, $1.68\pm 0.17^{+0.14}_{-0.09}$, and
$1.34\pm 0.13 ^{+0.11}_{-0.06}\times 10^{-6}$, where the errors are from the
quark mixing elements and hadronic effects, respectively. We also find that our
definitions of the T-odd observable and the up-down asymmetry of the $K$ meson
in $B\to K^*\ell^+ \ell^-\to K\pi\ell^+ \ell^-$ can be used to probe new
physics.

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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
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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: cmp-lg