A study of the nuclear medium influence on transverse momentum of hadrons produced in deep inelastic neutrino scattering
نویسنده
چکیده
The influence of nuclear effects on the transverse momentum (pT ) distributions of neutrinoproduced hadrons is investigated using the data obtained with SKAT propanefreon bubble chamber irradiated in the neutrino beam (with Eν = 3-30 GeV) at Serpukhov accelerator. Dependences of < p2T > on the kinematical variables of inclusive deep-inelastic scattering and of the produced hadrons are measured. It has been observed, that the nuclear effects cause an enhancement of < p2T > of hadrons (more pronounced for the positively charged ones) produced in the target fragmentation region at low invariant mass of the hadronic system (2 < W < 4 GeV) or at low energies transferred to the current quark (2 < ν < 9 GeV). At higher W or ν, no influence of nuclear effects on < p2T > is observed. Measurement results are compared with predictions of a simple model, incorporating secondary intranuclear interactions of hadrons (with a formation length extracted from the Lund fragmentation model), which qualitatively reproduces the main features of the data.
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