“…For light vector mesons, Q 2 ranges from Q 2 =0 GeV 2 up to 100 GeV 2 in the high W domain, where there are data from the H1 [33,34,35], ZEUS [36,37,38,39,40,41,42] and HERMES [43] (HERA) and E665 (Fermilab) [44] experiments. At low W , experiments at CORNELL [45] and with the CLAS detector at Jefferson Lab [46,47,48,49,50] have measured the ρ 0 , ω and φ electroproduction channels up to Q 2 =5 GeV 2 . For the heavy mesons, there are electroproduction data only for the J/Ψ from HERA [51,54]; otherwise, there are photoproduction data coming from the H1 [52], ZEUS [53], LHCb [55,56,57,58] and ALICE [59] experiments and a few fixed target data at low energies.…”