Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlated decays of pair-produced scalar taus   We study the quantum mechanical correlation between two identical neutralinos
in the decays of minimal supersymmetric standard model (MSSM) scalar tau (stau)
pair produced in e+e- annihilation. Generally, the decay products of scalar
(spinless) particles are not correlated. We show that a correlation between two
neutralinos appears near pair production threshold, due to a finite stau width
and mixing of the staus and/or neutralinos, and because the neutralinos are
Majorana. Because the correlation is significant only in a specific kinematical
configuration, it can be observed only in supersymmetric models where the
neutralino momenta can be kinematically reconstructed, such as in models with
R-parity violation.

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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ