Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at
  Photon Colliders   Possible anomalous top-quark couplings induced by SU(2) x U(1)
gauge-invariant dimension-6 effective operators were studied in the process of
t t-bar productions and decays at polarized gamma gamma colliders. Two
CP-violating asymmetries, a linear-polarization asymmetry and a
circular-polarization asymmetry, were computed including both non-standard [t
t-bar gamma] and [gamma gamma H] couplings. An optimal-observable analysis for
the process gamma gamma --> t t-bar --> l^{+-} ... was performed in order to
estimate the precision for determination of all relevant non-standard
couplings, including the anomalous tbW coupling.

37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci