DOI 10.1007/s100529800945
Single particle spectra in deep inelastic scattering
as a probe of small x dynamics
J. Kwiecinski - S.C. Lang - A.D. Martin
Department of Physics, University of Durham, Durham, DH1 3LE, UK
Received: 4 May 1998 / Published online: 21 August 1998
Abstract
We study the transverse momentum (pT) spectrum of charged
particles produced
in deep inelastic scattering (DIS) at small Bjorken x in the
central region
between the current jet and the proton remnants. We calculate
the spectrum at large pT with the BFKL 
resummation
included and then repeat the calculation with it omitted. We
find that data favour the former. We normalize our BFKL
predictions
by comparing with HERA data for DIS containing a forward jet.
The shape of the
x distribution of DIS + jet data is also well described by
BFKL dynamics.
Copyright Springer-Verlag
