φ meson production at forward rapidity in pp and Pb-Pb collisions with ALICE at the LHC

The ALICE Collaboration has measured meson production in the dimuon channel at the forward rapidity (2.5 < y < 4) in pp and Pb Pb collisions at several center of mass energies. Results in pp collisions at center of mass energies root s = 5.02 and 8 TeV are reported. They complement the previously published results at root s = 2.76 and root s = 7 TeV, providing a solid baseline for Pb Pb collisions. In Pb Pb, the preliminary meson transverse momentum spectra for different centrality classes and the yields as a function of the collision centrality in the transverse momentum range 2 < p(T) < 7 GeV/c are presented.