出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:We describe a systematic approach [1, 2] to the calculation of kinematic corrections µ t=Q2, ¨m2=Q2 in hard exclusive processes with nonzero momentum transfer. The complete expression is derived for the time-ordered product of two electromagnetic currents that includes all kinematic corrections up to twist-four accuracy. The results are applicable to the studies of deeply-virtual Compton scattering.