Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for $CP$ violation in $\Xi_b^- \to p K^- K^-$ decays   A search for $CP$ violation in charmless three-body $\Xi_b^- \to p K^- K^-$
decays is performed using $pp$ collision data recorded with the LHCb detector,
corresponding to integrated luminosities of $1\,\text{fb}^{-1}$ at a
centre-of-mass energy $\sqrt{s} = 7\,\text{TeV}$, $2\,\text{fb}^{-1}$ at
$\sqrt{s} = 8\,\text{TeV}$ and $2\,\text{fb}^{-1}$ at $\sqrt{s} =
13\,\text{TeV}$. A good description of the phase-space distribution is obtained
with an amplitude model containing contributions from $\Sigma(1385)$,
$\Lambda(1405)$, $\Lambda(1520)$, $\Lambda(1670)$, $\Sigma(1775)$ and
$\Sigma(1915)$ resonances. The model allows for $CP$-violation effects, which
are found to be consistent with zero. The branching fractions of $\Xi_b^- \to
\Sigma(1385) K^-$, $\Xi_b^- \to \Lambda(1405) K^-$, $\Xi_b^- \to \Lambda(1520)
K^-$, $\Xi_b^- \to \Lambda(1670) K^-$, $\Xi_b^- \to \Sigma(1775) K^-$ and
$\Xi_b^- \to \Sigma(1915) K^-$ decays are also reported. In addition, an upper
limit is placed on the product of ratios of $\Omega_b^-$ and $\Xi_b^-$
fragmentation fractions and the $\Omega_b^- \to p K^- K^-$ and $\Xi_b^- \to p
K^- K^-$ branching fractions.

7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg