Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD predictions for spin dependent photonic structure function
  $g_1^{\gamma}(x,Q^2)$ in the low x region of future linear colliders   Spin dependent structure function $g_1^{\gamma}(x,Q^2)$ of the polarised
photon is analysed within the formalism based upon the unintegrated spin
dependent parton distributions incorporating the LO Altarelli-Parisi evolution
and the double $ln^2(1/x)$ resummation at low values of Bjorken parameter x. We
analyse the effects of the double $ln^2(1/x)$ resummation on the behaviour of
$g_1^{\gamma}(x,Q^2)$ in the low x region which may be accessible in future
linear $e^+e^-$ and $e\gamma$ colliders. Sensitivity of the predictions on the
possible nonperturbative gluon content of the polarised photons is analysed.
Predictions for spin dependent gluon distribution $\Delta g^{\gamma} (x,Q^2)$
are also given.

5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess