Predizioni sulla produzione di di-barioni debolmente legati nella regione del bottomonio

The formation of antideuterons in HEP processes is commonly described using coalescence models. Since antideuteron has been proposed as a low-background detection channel for dark matter searches, more refined models have been suggested. They aim at improving the predictions of antideuteron comic rays flux from dark matter sources and to better describe experimental data regarding antideuteron production at colliders. The models currently available can be gathered into three main groups: the simple coalescence model, the cross section based model and the advanced coalescence model. This work consists in a comprehensive study of these models, applying them to the description of all the available measurements performed in electron-positron collision at 10.58 GeV center-of-mass energy, and in bottomonium decays. I developed a new tuning of Pythia8 Monte Carlo generator to properly describe the fragmentation process in bottomonium decays. I report the first prediction of the deuteron-antideuteron inclusive production rate. Extending the simple coalescence models to the H-dibaryon formation problem, I report the first prediction of H-dibaryon inclusive production rate.