Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theoretical study of the $\Delta^{++}-\Delta^-$ configuration in the
  deuteron using antiproton beam   We study the manifestation of the $\Delta^{++}-\Delta^-$ component of the
deuteron wave function in the exclusive reaction $\bar p d \to \pi^- \pi^-
\Delta^{++}$. Due to the large binding energy the internal motion in the
$\Delta-\Delta$ system is relativistic. We take this into account within the
light-cone (LC) wave function formalism and, indeed, found large differences
between calculations based on the LC and non-relativistic (NR) wave functions.
We demonstrate, that the consistent LC treatment of the $\Delta-\Delta$ system
plays the key role in the separation of the signal and background. Within the
LC approach, the characteristic shape of the momentum distribution of the
$\Delta-\Delta$ bound system predicted by the meson-exchange model is well
visible on the background of usual annihilations at beam momenta between 10 and
15 GeV/c.

35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol