Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: D$_{s}^+$ meson production at central rapidity in proton-proton
  collisions at $\sqrt{s}$ = 7 TeV   The $p_{\rm T}$-differential inclusive production cross section of the prompt
charm-strange meson $\rm D_s^+$ in the rapidity range $|y|<0.5$ was measured in
proton-proton collisions at $\sqrt{s}=7$ TeV at the LHC using the ALICE
detector. The analysis was performed on a data sample of $2.98 \times 10^8$
events collected with a minimum-bias trigger. The corresponding integrated
luminosity is $L_{\rm int}=4.8$/nb. Reconstructing the decay ${\rm D_s^{+}\to
\phi\pi^+}$, with $\phi\to {\rm K}^-{\rm K}^+$, and its charge conjugate, about
480 ${\rm D_s^{\pm}}$ mesons were counted, after selection cuts, in the
transverse momentum range $2<p_{\rm T}<12$ Gev/$c$. The results are compared
with predictions from models based on perturbative QCD. The ratios of the cross
sections of four D meson species (namely ${\rm D^0}$, ${\rm D^+}$, ${\rm
D^{*+}}$ and ${\rm D_s^+}$) were determined both as a function of $p_{\rm T}$
and integrated over $p_{\rm T}$ after extrapolating to full $p_{\rm T}$ range,
together with the strangeness suppression factor in charm fragmentation. The
obtained values are found to be compatible within uncertainties with those
measured by other experiments in $\rm e^+e^-$, ep and pp interactions at
various centre-of-mass energies.

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The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom