Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is $M_t\simeq M_w$ Ruled Out?   A four generation supersymmetric model is proposed, in which the Tevatron
``top-quark'' events are reinterpreted as the production of $t^\prime$ which
decays dominantly to $bW^+$. In this model, $m_t\simeq m_W$, and
$t\rta\widetilde t\widetilde\chi^0_1$, with $\widetilde t\rta
c\widetilde\chi^0_1$. This decay chain, which rarely produces a hard isolated
lepton, would have been missed in all previous top quark searches. A narrow
region of the model parameter space exists which cannot yet be ruled out by
present data. This model predicts a rich spectrum of new physics which can be
probed at LEP-II and the Tevatron.

13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio