Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Supersymmetric Grand Unification with a Fourth Generation?   The possibility of incorporating a chiral fourth generation into a SUSY-GUT
is investigated. Precision fits to electroweak observables require us to
introduce light supersymmetric particles, with masses less than mZ. These
particles might also provide decay channels for fourth generation quarks of
mass ~ 100 GeV. We also require tan(beta) to lie in the range 1.50 <~ tan(beta)
<~ 1.75 and obtain an upper limit on the lightest Higgs boson mass in the MSSM4
of 152 GeV.

24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph