************************************************************** * * Paper : Diffractive Electroproduction of rho and phi Mesons * at HERA, DESY 09-093 * Reac : GAMMA* P --> RHO0 P( or Y), GAMMA* P --> PHI P( or Y) * Caption : Cosine of the phase delta between the T_00 and T_11 * helicity conserving amplitudes for rho and phi meson * production, measured as a function of Q**2 from 2D * fits, in the SCHC approximation (|t| < 0.5 GeV**2) * ************************************************************** * * Q**2 cosDel stat syst+ syst- * * GAMMA* P --> RHO0 P( or Y) * 3.3 0.914 0.014 0.021 -0.024 6.6 0.915 0.026 0.018 -0.024 15.8 0.978 0.030 0.016 -0.052 * * GAMMA* P --> PHI P( or Y) * 5.3 0.966 0.027 0.012 -0.018