Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of tan beta in associated t H^\pm Production in gamma gamma
  Collisions   The ratio of neutral Higgs field vacuum expectation values, tan beta, is one
of the most important parameters to determine in type-II Two-Higgs Doublet
Models (2HDM), specifically the Minimal Supersymmetric Standard Model (MSSM).
Assuming the energies and integrated luminosity of a future high energy e^+e^-
linear collider of sqrt{s}=500, 800, 1000, and 1500 GeV and L=1 ab^{-1} we show
that associated t H^+/- production in gamma gamma collisions can be used to
make an accurate determination of tan beta for low and high tan beta by
precision measurements of the gamma gamma -> H^+/- t + X cross section.

37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga