Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $K^-d\rightarrow \pi\Sigma n$ reactions and structure of the
  $\Lambda(1405)$   We report on the first results of a full three-body calculation of the
$\bar{K}NN$-$\pi YN$ amplitude for the $K^-d\rightarrow\pi\Sigma n$ reaction,
and examine how the $\Lambda(1405)$ resonance manifests itself in the neutron
energy distributions of $K^-d\rightarrow\pi\Sigma n$ reactions. The amplitudes
are computed using the $\bar{K}NN$-$\pi YN$ coupled-channels
Alt-Grassberger-Sandhas (AGS) equations. Two types of models are considered for
the two-body meson-baryon interactions: an energy-independent interaction and
an energy-dependent one, both derived from the leading order chiral SU(3)
Lagrangian. These two models have different off-shell properties that cause
correspondingly different behaviors in the three-body system. As a remarkable
result of this investigation, it is found that the neutron energy spectrum,
reflecting the $\Lambda(1405)$ mass distribution and width, depends quite
sensitively on the (energy-dependent or energy-independent) model used. Hence
accurate measurements of the $\pi\Sigma$ mass distribution have the potential
to discriminate between possible mechanisms at work in the formation of the
$\Lambda(1405)$.

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The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
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The categories of this paper are: econ
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph