Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of $B_s^0\to J/\psi f_0(980)$ and Evidence for $B_s^0\to
  J/\psi f_0(1370)$   We report the first observation of $B_s^0\to J/\psi f_0(980)$ and first
evidence for $B_s^0\to J/\psi f_0(1370)$, which are CP eigenstate decay modes.
These results are obtained from $121.4\;\mathrm{fb}^{-1}$ of data collected at
the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB $e^+e^-$
collider. We measure the branching fractions $\mathcal{B}(B_s^0\to J/\psi
f_0(980);f_0(980)\to\pi^+\pi^-)=(1.16^{+0.31}_{-0.19}(\mathrm{stat.})^{+0.15}_{-0.17}(\mathrm{syst.})^{+0.26}_{-0.18}(N_{B_s^{(*)}\bar
B_s^{(*)}})) \times 10^{-4}$ with a significance of $8.4\sigma$, and
$\mathcal{B}(B_s^0\to J/\psi
f_0(1370);f_0(1370)\to\pi^+\pi^-)=(0.34^{+0.11}_{-0.14}(\mathrm{stat.})^{+0.03}_{-0.02}(\mathrm{syst.})^{+0.08}_{-0.05}(N_{B_s^{(*)}\bar
B_s^{(*)}})) \times 10^{-4}$ with a significance of $4.2\sigma$. The last error
listed is due to uncertainty in the number of produced $B_s^{(*)}\bar
B_s^{(*)}$ pairs.

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The categories of this paper are: math
6
The categories of this paper are: astro-ph
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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: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics
10
The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph