Evolution of e p fragmentation and multiplicity distributions in the Breit frame

Low x deep-inelastic ep scattering data, taken in 1994 at the H1 detector at HERA, are analysed in the Breit frame of reference. The evolution of the peak and width of the current hemisphere fragmentation function is presented as a function of Q and compared with e+e- results at equivalent centre of mass energies. Differences between the average charged multiplicity and the multiplicity of e+e- annihilations at low energies are analysed. Invariant energy spectra are compared with MLLA predictions. Distributions of multiplicity are presented as functions of Bjorken-x and Q^2, and KNO scaling is discussed.

Note:

24 pages, 9 Figures, figure 2 corrected Report-no: DESY 97-108

positron p: colliding beams
positron p: deep inelastic scattering
hadron: multiple production
small-x
kinematics: Breit frame
fragmentation function
dependence: momentum transfer
x-dependence
electron positron: annihilation
charged particle: multiplicity

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