Measurement of the inclusive J/ $\psi $ polarization at forward rapidity in pp collisions at $\sqrt{s}=8$ TeV

We report on the measurement of the inclusive J/ $\psi $ polarization parameters in pp collisions at a center of mass energy $\sqrt{s}=8$ TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.23 pb ${}^{-1}$ . J/ $\psi $ resonances are reconstructed in their di-muon decay channel in the rapidity interval $2.5