Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The lightest visible-sector supersymmetric particle is likely to be
  unstable   We argue, based on typical properties of known solutions of
string/$M$-theory, that the lightest supersymmetric particle of the visible
sector will not be stable. In other words, dark matter is {\em not} a particle
with Standard Model quantum numbers, such as a WIMP. The argument is simple and
based on the typical occurrence of a) hidden sectors, b) interactions between
the Standard Model (visible) sector and these hidden sectors, and c) the lack
of an argument against massive neutral hidden sector particles being lighter
than the lightest visible supersymmetric particle. These conclusions do not
rely on arguments such as R-parity violation.

30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas