Measurement of quarkonium elliptic flow in pPb collisions at 8.16 TeV with the CMS detector

The second-order Fourier coefficients ($v_{2}$) of $\Upsilon$(1S) and J/$\psi$ mesons in high-multiplicity pPb collisions is studied using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy 8.16 TeV. The dimuons used to reconstruct the quarkonium states are coupled with charged hadrons using the long-range two-particle correlation technique. The measurement of the $\Upsilon$(1S) $v_{2}$ is reported for the first time in small collision systems. The results are discussed in terms of collectivity and modification of heavy quarks.