Probing the BFKL gluons with J/ψ leptoproduction

We analyse the production of J/ψ particles in high energy electron proton collisions paying attention to off shell gluon states in the photon-gluon fusion subprocess. We find that the degree of J/ψ spin alignement is sensitive to the initial gluon virtuality. The considered process may be proposed as a test of noncollinear parton evolution theory.