dc.description.abstract | ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision
√sNN = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing
bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals
2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum. In this work,
results on the ϒ(1S) production cross section as a function of rapidity and transverse momentum
are presented. The corresponding nuclear modification factor shows a suppression of the ϒ(1S) yields
with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in
the low transverse momentum region and shows no significant dependence on the centrality of the
interactions. Furthermore, the ϒ(2S) nuclear modification factor is evaluated, suggesting a suppression
similar to that of the ϒ(1S). A first measurement of the ϒ(3S) has also been performed. Finally, results are
compared with previous ALICE measurements in p–Pb collisions at √sNN = 5.02 TeV and with theoretical
calculations. | en |