Unpolarized azimuthal asymmetries

The study of the transverse-spin and transverse-momentum structure of the nucleon is part of the scientific program of COMPASS, a fixed-target experiment at the CERN SPS. By studying the distributions of the hadrons produced in SIDIS off unpolarized targets one can have insights on the structure of the nucleon and on the possible correlations between transverse spin and intrinsic transverse momentum of the quarks. In this presentation the new results for the azimuthal asymmetries and for the hadron multiplicities are presented. They are obtained from the COMPASS data collected with a 160GeV$/c$ positive muon beam impinging on a $^{6}$LiD target.