Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The gamma gamma to gamma Z process at high energies and the search for
  virtual SUSY effects   We study the helicity amplitudes and the observables of the process $\gamma
\gamma \to \gamma Z$ at high energy. As in the case of the $\gamma \gamma \to
\gamma\gamma$ process studied before, the relevant diagrams in the standard
model (SM) involve $W$, charged quark and lepton loops; while in SUSY we also
have contributions from chargino, and charged sfermion or Higgs loop diagrams.
Above 250 GeV, the dominant SM amplitudes are themselves dominated by the $W$
loop, and as for $\gamma \gamma \to \gamma \gamma$, they are helicity
conserving and almost purely imaginary. We discuss the complementary
information provided by $\gamma \gamma \to \gamma Z$ for the identification of
possible non standard effects. This process, together with $\gamma \gamma \to
\gamma \gamma$, should provide very useful information on the nature of
possible new physics particles, above the threshold of their direct production.

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The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: nlin
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th