Light vector meson production at forward rapidity in pp collisions at the LHC with the ALICE detector

Low-mass vector mesons ($\rho$, $\omega$ and $\phi$) give us information on the hot and dense state of strongly interacting matter produced in heavy ion collisions. In fact, in the QGP an enhancement of the strange particle production should be present (strangeness enhancement), which means a N$\phi$ /N$\rho+\omega$ ratio increasing in A-A collisions with respect to pp collisions; pp collisions provide a reference for these studies. Vector meson production in pp collisions is also useful by itself, to study soft Quantum ChromoDynamics (QCD) in the LHC energy range, since calculations in this regime are based on QCD inspired phenomenological models that must be tuned to the data. The ALICE experiment at the LHC can access vector mesons produced at forward rapidity through their decays in muon pairs. We will show the ratio $N\phi$ /N$\rho+\omega$ vs pT, the ratios $\sigma_\rho/\sigma_\omega$ and $\sigma_\phi/\sigma_\omega$, and the $\phi$ and $\omega$ pT and rapidity differential cross sections for the data sample at 7 TeV. For the data sample at 2.76 TeV, because of the limited statistics, we have show only the $N\phi/ N_\rho+\omega$ ratio and $\phi$ and $\omega$ integrated cross sections.