Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the $CP$ asymmetry in $B_s^0-\overline{B}{}_s^0$ mixing   The $CP$ asymmetry in the mixing of $B_s^0$ and $\overline{B}{}_s^0$ mesons
is measured in proton-proton collision data corresponding to an integrated
luminosity of 3.0 fb$^{-1}$, recorded by the LHCb experiment at centre-of-mass
energies of 7 and 8 TeV. Semileptonic $B_s^0$ and $\overline{B}{}_s^0$ decays
are studied in the inclusive mode $D_s^{\mp} \mu^{\pm} \nu_{\mu} X$ with the
$D_s^{\mp}$ mesons reconstructed in the $K^+ K^- \pi^{\mp}$ final state.
Correcting the observed charge asymmetry for detection and background effects,
the $CP$ asymmetry is found to be $a_{\text{sl}}^s = (0.39 \pm 0.26 \pm 0.20)
\% $, where the first uncertainty is statistical and the second systematic.
This is the most precise measurement of $a_{\text{sl}}^s$ to date. It is
consistent with the prediction from the Standard Model and will constrain new
models of particle physics.

24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci