# Nuclear medium effects on hadronization measured by the HERMES Collaboration

Europe/Rome
Aula Leale edif. 22 (Laboratori Nazionali di Frascati, Via E. Fermi 40, Frascati)

### Aula Leale edif. 22

#### Laboratori Nazionali di Frascati, Via E. Fermi 40, Frascati

Description
The influence of cold nuclear medium effects on hadron multiplicities in semi-inclusive deep inelastic scattering was studied extensively and is presented together with the first direct measurement of $p_t$-broadening effects in cold nuclear matter as a function of several kinematic variables for different hadron types. The data have been accumulated by the {\scHermes} experiment at {\sc Desy}, in which the {\sc Hera} 27.6~GeV lepton beam scattered off several nuclear gas targets. These analysis provide precious information concerning the space-time evolution of hadronization.
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