Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lightest U-parity Particle (LUP): a hidden sector dark matter candidate   We introduce a new dark matter candidate, the lightest U-parity particle
(LUP). We suggest it as a good dark matter candidate especially in the R-parity
violating supersymmetric model.

23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess