Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rare B Decays at CMS   The flavour changing neutral current decays can be interesting probes for
searching for New Physics. Angular distributions of the decay $\mathrm{B}^0 \to
\mathrm{K}^{*0} \mu^ +\mu^-$ are studied using a sample of proton-proton
collisions at $\sqrt{s} = 8~\mathrm{TeV}$ collected with the CMS detector at
the LHC, corresponding to an integrated luminosity of $20.5~\mathrm{fb}^{-1}$.
An angular analysis is performed to determine $P_1$ and $P_5'$, where $P_5'$ is
of particular interest due to recent measurements that indicate a potential
discrepancy with the standard model. Based on a sample of 1397 signal events,
$P_1$ and $P_5'$ angular parameters are determined as a function of the dimuon
invariant mass squared. The measurements are in agreement with standard model
predictions.

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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: q-bio
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: econ