Speaker
Massimiliano Marchisone
(Turin University and INFN)
Description
"The measurement in hadron collisions of bottomonia ($b\bar{b}$ mesons) is a powerful tool to investigate their properties and those of the surrounding medium.
According to the color-screening model, bottomonia give important information about the deconfined medium called Quark-Gluon Plasma (QGP) that is produced in ultrarelativistic heavy-ion collisions. On the other hand, cold nuclear matter (CNM) effects can also modify the bottomonium production even in absence of deconfined matter: its study in pA collisions is therefore essential to disentangle these effects from the hot ones. Last, in pp collisions high precision data serve as crucial test of different
models of quarkonium hadroproduction and provide the reference for the measurements in AA and pA collisions.
In the ALICE Muon Spectrometer, bottomonium is measured at forward rapidity ($2.5 < y < 4$) and down to $p_{\mathrm{T}} = 0$ exploiting the dimuon decay channel. The latest results of bottomonium production in pp, Pb--Pb and p--Pb collisions are discussed and compared to available theoretical calculations."
Author
Massimiliano Marchisone
(Turin University and INFN)