Abstract:
Distributions of baryons in high energy collisions of hadrons and nuclei contain important information on the mechanism underlying multiparticle production processes. In this work, we present a phenomenological study of new, high precision experimental data on non-strange baryon spectra in pp and pC reactions at √sNN = 17.3 GeV, made in the framework of the Dual Parton Model. These new experimental data are not subject to limitations imposed to earlier data sets used in such studies. We find that the classical mechanism proposed by Capella and Tran Thanh Van cannot describe the full distribution of final state baryons in pC reactions in which the proton projectile undergoes multiple collisions with carbon nucleons. This reveals a new class of baryonic final states, characterized by long distance transfers of baryon number in rapidity space. If confirmed, our observation brings important implications for antiproton reactions with nuclear targets, suggesting the need for a new experimental programme aimed at studies of such processes.
Important: This seminar is remote only due to the COVID-19 regulations