Spin Dependence of Diffractive Vector Meson Production

Details Spin Dependence of Diffractive Vector Meson Production Spin Dependence of Diffractive Vector Meson Production

1999-08-24

arxiv.org/abs/hep-ph/9908453v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 3 figures. Joint INT / Jefferson Lab Workshop on `Exclusive And Semiexclusive Processes At High Momentum Transfer', J

Scientific paper

I review the recent progress in the theory of s-channel helicity nonconservation (SCHNC) effects in diffractive DIS. SCHNC in diffractive vector meson production is an unique probe of the spin-orbit coupling and Fermi motion of quarks in vector mesons. Photo- and electroproduction of the $\phi$ and its radial and angular excitations at Jlab is perfectly posed to probe SCHNC in QCD pomeron exchange. I also discuss the unitarity driven demise of the Burkhardt-Cottingham sum rule and large & scaling departure from the Wandzura-Wilczek relation.

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