2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 6, 671-680
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

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 $\ln (1/x)$ 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.

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