Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal Beam Polarizations for New-Physics Search through gamma gamma ->
  t tbar -> lX/bX   We perform an optimal-observable analysis of the final charged-lepton/b-quark
momentum distributions in gamma+gamma -> t+tbar -> lX/bX for various beam
polarizations in order to study possible anomalous t-tbar-gamma, tbW and
gamma-gamma-H couplings, which could be generated by SU(2)xU(1) gauge-invariant
dimension-6 effective operators. We find optimal beam polarizations that will
minimize the uncertainty in determination of those non-standard couplings. We
also compare e+ebar and gamma+gamma colliders from the viewpoint of the
anomalous-top-quark-coupling determination.

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The categories of this paper are: ao-sci
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The categories of this paper are: econ
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga