Investigating Partons' Transverse Spin with Deep Inelastic Exclusive Experiments

Abstract

We show how deeply virtual pseudoscalar meson production experiments single out the contribution of the four chiral odd quark-proton GPDs which are related to the so far elusive transversity distribution function, $h_1$. Furthermore, in the kinematical ranges of the proposed EIC, electroproduction of strange and charmed mesons will allow one to uniquely pin down the non-perturbative charmed component in the nucleon structure function, and at the same time provide new insights in the connection of the quark/gluon degrees of freedom with the meson-baryon description. The use of dispersion relations as well as the naive extension of the parton model to the ERBL region are critically analyzed.

Comments: 5 pages, 2 figures, unexpurgated version of the contribution submitted to the section "Spatial imaging of quarks and gluons" (tentative title) of the INT 10-3 program write-up