Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A study of the neutrinoproduction of Phi and D_s^+ mesons   The neutrinoproduction of $\phi$ and $D^+_s$ mesons is studied, using the
data obtained with the SKAT bubble chamber at the Serpukhov accelerator. It is
found that the $\phi$ production occurs predominantly in the forward hemisphere
of the hadronic c.m.s. (at $x_F > 0$, $x_F$ being the Feynman variable), with
the mean yield strongly exceeding the expected yield of directly produced
$\phi$ mesons and varying from $<n_{\Phi}(x_F > 0) > = (0.92\pm0.34) \cdot
10^{-2}$ at $W > $ 2 GeV up to $(1.23\pm0.53) \cdot 10^{-2}$ at $W >$ 2.6 GeV
and $(1.44\pm0.69) \cdot 10^{-2}$ at $W >$ 2.9 GeV, $W$ being the invariant
mass of the hadronic system. The yield of leading $D^+_s$ mesons carrying more
than $z = 0.85$ of the current $c$- quark energy is estimated: at $W > 2.9$
GeV, $<n_{D^+_s}(z > 0.85) > = (6.64\pm1.91) \cdot 10^{-2}$. It is shown, that
the shape of the $\phi$ meson differential spectrum on $x_F$ is reproduced by
that expected from the $D^+_s \to \phi X$ decays which, however, can account
for only the half of the measured $\phi$ yield.

31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th