Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of Scalar Leptoquarks at HERA with Polarized Protons   The search and the identification of Scalar Leptoquarks are analyzed for the
HERA collider. We emphasize the relevance of having polarized beams and we make
some remarks on the usefulness of en collisions.

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The categories of this paper are: eess
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
3
The categories of this paper are: physics