DOI 10.1007/s100520000426
The relevance of
in hard collisions of virtual photons
J. Chýla - M. Tasevský
Institute of Physics, Na Slovance 2, Prague 8, Czech Republic
Received: 30 March 2000 / Published online: 6 July 2000 - © Springer-Verlag 2000
Abstract
We explore the relevance of extending the concept of the partonic
structure to the longitudinally polarized virtual photon involved in hard
collisions. We show that for moderate photon virtualities and
in the
kinematical region accessible in current experiments at HERA
and LEP,
the contributions of its longitudinal polarization to hard collisions
are sizable and should be taken into account as part of the resolved
photon component.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
