Patricia Ball's research while affiliated with Durham University and other places

Publication (1)

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Wandzura-Wilczek (WW) relations between matrix-elements of bilocal light-ray operators have recently regained interest in connection with off-forward scattering processes. Originally derived for matrix elements over leading-twist operators, their generalization to off-forward and exclusive processes gets complicated by the presence of higher-twist...


... Solving the distributions of dynamical twist w.r.t. those of geometric twist allows to derive the well-known WW-relations together with additional WW-like relations [31]; corresponding relations have been derived for the (light) meson LCDAs [34] and, later on, called geometrical WW-relations [35]. Using in addition the equations of motion, a different set of WW-like relations for the LCDAs -especially for the vector meson case -appeared [14]; they should be called dynamical WW-relations. ...