DOI 10.1007/s100529800977
Small-x behaviour
of the polarized photon structure
function 
B. Ermolaev1,2 - R. Kirschner1 - L. Szymanowski1,3
1 Naturwissenschaftlich-Theoretisches Zentrum
und Institut für Theoretische Physik, Universität Leipzig
Augustusplatz 10, D-04109 Leipzig, Germany
2 Ioffe Physico-Technical Institute, St. Petersburg 194021, Russia
3 Soltan Institut for Nuclear Studies, Hoza 69, 00-681 Warsaw,
Poland
Received: 23 June 1998 / Published online: 16 September 1998
Abstract
We study the small-x behaviour of the polarized photon structure function
, measuring the gluon transversity distribution, in the leading
logarithmic approximation of perturbative QCD.
There are two contributions, both arising from two-gluon exchange.
The leading contribution to small-x is related to the BFKL pomeron and
behaves like
,
.The other contribution includes in particular the ones summed by
the DGLAP equation and behaves like
,
.
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