Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A study of SUSY signatures at the Tevatron in models with near mass
  degeneracy of the lightest chargino and neutralino   For some choices of soft SUSY-breaking parameters, the LSP is a stable
neutralino $\cnone$, the NLSP is a chargino $\cpmone$ almost degenerate in mass
with the LSP ($\dmchi\equiv\mcpmone-\mcnone\sim \mpi-$few GeV), and all other
sparticles are relatively heavy. In this case, detection of sparticles in the
usual, mSUGRA-motivated signals will be difficult, since the decay products in
$\cpmone\to\cnone...$ will be very soft, and alternative signals must be
considered. Here, we study the viability of signatures at the Tevatron based on
highly-ionizing charged tracks, disappearing charged tracks, large impact
parameters, missing transverse energy and a jet or a photon, and determine the
mass reach of such signatures assuming that only the $\cpmone$ and $\cnone$ are
light. We also consider the jet+$\etmiss$ and $\gamma+\etmiss$ signatures
assuming that the gluino is also light with $\mgl\sim \mcpmone$. We find that
the mass reach is critically dependent upon $\dmchi$ and $\mgl-\mcpmone$. If
$\dmchi$ is sufficiently big that $c\tau(\cpmone)\lsim$few cm and $\mgl$ is
large, there is a significant possibility that the limits on $\mcpmone$ based
on LEP2 data cannot be extended at the Tevatron. If $c\tau(\cpmone)>$few cm,
relatively background-free signals exist that will give a clear signal of
$\cpmone$ production (for some range of $\mcpmone$) even if $\mgl$ is very
large.

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The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci