Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: THE $t\bar t\gamma$ BACKGROUND TO $pp\rightarrow W\gamma + X$ AT THE SSC   We calculate the $pp\rightarrow t\bar t\gamma+X\rightarrow W\gamma + X$ cross
section at SSC energies. Approximately 40\% of the total cross section
originates from photon bremsstrahlung off the final state jet in $t\bar tj$
production. Without cuts restricting the hadronic activity, the $t\bar t\gamma$
rate is a factor 10 (2) larger than the tree level $W\gamma$ cross section for
a top quark mass of 110~GeV (200~GeV). Imposing a jet veto cut, the $t\bar
t\gamma$ rate can be suppressed to a level well below the $W\gamma+0$~jet
signal cross section.

37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex