Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-06-25
Nucl.Phys. A715 (2003) 506-509
Physics
High Energy Physics
High Energy Physics - Experiment
5 pages, 5 figures, Proceeding of DIS 2001, IX International Workshop on Deep Inelastic Scattering Bologna, 27 April-1 May 200
Scientific paper
10.1016/S0375-9474(03)00633-X
The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep inelastic scattering has been studied by the HERMES experiment at DESY using 27.5 GeV positrons. A substantial reduction of the multiplicity of charged hadrons and identified charged pions from nuclei relative to that from deuterium has been measured as function of the relevant kinematic variables. The preliminary results on krypton show a larger reduction of the multiplicity ratio $R_M^{h}$ with respect to the one previously measured on nitrogen and suggest a possible modification of the quark fragmentation process in the nuclear environment.
Muccifora Valeria
on behalf of the HERMES Collaboration
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