Eur. Phys. J. A (2004) 19: 147-151
https://doi.org/10.1140/epjad/s2004-03-024-x

Hadrons in the nuclear medium

Hadron multiplicity in semi-inclusive lepton-nucleon and lepton-nucleus scattering

¹ INFN and Physics Department, Università “La Sapienza”. I-00185 Roma, Italy
² International School for Advanced Studies (SISSA). I-34014 Trieste, Italy
³ Joint Institute for Nuclear Research. Dubna, Moscow Region, 141980 Russia
⁴ State University of New York at Buffalo. Buffalo, NY 14260-4600, USA

Received: 30 September 2003
Published online: 12 February 2004

Abstract

We discuss multi-hadron production in both inelastic neutrino-nucleon interactions in the current fragmentation region and neutrino-nucleus collisions in the target fragmentation region. Our analysis, carried out within the framework of the quark-gluon string model, is mainly focused on the difference between these two processes. We show that the Q ² dependence of hadron multiplicity in the current and target fragmentation regions is indeed completely different. The study of inelastic ν-A scattering in the target fragmentation region also provides new information on nuclear structure at small N-N distances. The results of the proposed approach are in satisfactory agreement with the data recently obtained at CERN by the NOMAD Collaboration.