Azimuthal anisotropy and nuclear modification of Upsilon states in heavy-ion collisions with the CMS detector

Bottomonia are produced by hard scattering in the early times of a relativistic heavy-ion collision, so they serve as excellent probes of the quark-gluon plasma (QGP). Early CMS data showed that the yields of the ϒ(1 S ), ϒ(2 S ), and ϒ(3 S ) mesons are suppressed in PbPb relative to those in pp. In order to interpret the results in PbPb collision unambiguously, the cold nuclear matter effects need to be quantitatively estimated using pPb collisions data. Additionally, the measurement of the elliptic azimuthal anisotropy of bottomonium states have been suggested as a powerful tool to study the different in-medium effects such as dissociation and regeneration. In these proceedings, the new bottomonium results are reported for pPb and PbPb collisions data at 5.02 TeV with the CMS detector. First, the nuclear modification factors of the ϒ(1 S ), ϒ(2 S ), and ϒ(3 S ) mesons are presented in pPb collisions as functions of the transverse momentum and rapidity. Then, the new measurements of the azimuthal anisotropy ( ν 2 ) of the ϒ(1 S ) and ϒ(2 S ) mesons are reported using PbPb collisions data at 5.02 TeV taken in 2018.