Diffractive rho and phi production in DIS at HERA

32 <W < 180 GeV. The H1 collaboration studied ρ and φ production, both in the elastic and proton dissociative channels, in the kinematic domain 2.5 < Q2 < 60 GeV2 and 30 < W < 180 GeV, with an integrated luminosity of 51pb−1. The total, longitudinal and transverse cross sections as well the s-channel helicity conserving and violating amplitudes are measured as a function of Q2, W and |t|, the squared-four-momentum transfer to the proton. Emphasis is put on the transition