Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of $B_s^0-\bar{B}_s^0$ Oscillations and Measurement of
  $\Delta m_s$ in CDF   We report the observation of $\B_s^0-\bar{B}_s^0$ oscillations performed by
the CDF II detector using a data sample of 1 $fb^{-1}$ of $p\bar{p}$ collisions
at $\sqrt{s}=1.96 \TeV$. We measure the probability as a function of proper
decay time that the $B_s$ decays with the same, or opposite, flavor as the
flavor at production, and we find a signal for $\B_s^0-\bar{B}_s^0$
oscillations. The probability that random fluctuations could produce a
comparable signal is $8 \times 10^{-8}$, which exceeds $5\sigma$ significance.
We measure $\Delta m_s = 17.77 \pm{0.10} ({\rm stat}) \pm{0.07} ({\rm syst})
ps^{-1}$. A very important update has been presented by the CDF collaboration
after I gave my talk, the latest available results on $B_s$ mixing are included
here.

20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci