Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Consequences of t-channel unitarity for gamma(*)p and gamma(*) gamma(*)
  amplitudes   We show that t-channel unitarity constraints make it possible to obtain the
photon-photon cross sections from the photon-proton and proton-proton cross
sections, for Q2<150 GeV2. In order to do so, one must postulate the existence
of double-pole or triple-pole singularities in the complex j plane.

23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat