Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the branching fractions of the decays $D^+\rightarrow
  K^-K ^+K^+$, $D^+\rightarrow \pi^-\pi^+K^+$ and $D^+_s\rightarrow
  \pi^-K^+K^+$   The branching fractions of the doubly Cabibbo-suppressed decays
$D^+\rightarrow K^-K^+K^+$, $D^+\rightarrow \pi^-\pi^+K^+$ and
$D^+_s\rightarrow\pi^-K^+K^+$ are measured using the decays $D^+\rightarrow
K^-\pi^+\pi^+$ and $D^+_s\rightarrow K^-K^+\pi^+$ as normalisation channels.
The measurements are performed using proton-proton collision data collected
with the LHCb detector at a centre-of-mass energy of 8 TeV, corresponding to an
integrated luminosity of 2.0 fb$^{-1}$. The results are
  \begin{align}
  \frac {\mathcal{B}(D^+\rightarrow K^-K^+K^+)} {\mathcal{B}(D^+\rightarrow
K^-\pi^+\pi^+)}& = (6.541 \pm 0.025 \pm 0.042) \times 10^{-4},\nonumber
  \frac {\mathcal{B}(D^+\rightarrow \pi^-\pi^+K^+)} {\mathcal{B}(D^+\rightarrow
K^-\pi^+\pi^+)}& = (5.231 \pm 0.009 \pm 0.023) \times 10^{-3}, \nonumber
  \frac {\mathcal{B}(D^+_s\rightarrow\pi^-K^+K^+)}
{\mathcal{B}(D^+_s\rightarrow K^-K^+\pi^+)}& = (2.372 \pm 0.024 \pm 0.025)
\times 10^{-3},\nonumber
  \end{align} where the uncertainties are statistical and systematic,
respectively. These are the most precise measurements up to date.

20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an