  LPS provides access to new fundamental observables: the diffraction cone and
azimuthal asymmetries. Diffraction cone has a unique rise of $B_T$ from the
exclusive limit to excitation of continuum $M^2 \approx Q^2$ which is in
striking contrast to experience with real photoproduction and hadronic
diffraction. Azimuthal asymmetry is large and pQCD calculable at large $\beta$
and can be measured with LPS. It allows testing of the pQCD prediction of $L/T
>> 1$.
