Single particle spectra in deep inelastic scattering as a probe of small x dynamics
J. Kwiecinski, S. C. Lang, A. D. Martin
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 (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 are also well described by BFKL dynamics.
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