Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental Status of b --> s(d) gamma Decays   Radiative penguin decays provide an indirect probe for physics beyond the
Standard Model and contribute to the determination of the CKM matrix elements.
Copious quantities of B mesons produced at the B-Factories permit precision
measurements of radiative penguin decays. We review the experimental status of
the radiative penguin processes b --> s(d) gamma.

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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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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: patt-sol
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The categories of this paper are: cs