Generalized transparency in semi-inclusive processes

Abstract

It is argued that the transparency of a medium for passage of a nucleon, knocked-out in a semi-inclusive $(e,e^{\prime }p)$ reaction and subsequently scattered elastically, is not the same as the one measured in purely elastic scattering. Expressions are given for the properly generalized transparency and those are compared with recently proposed, alternative suggestions. Numerical results are presented for selected nuclear targets and kinematic conditions, applying to the Garino et al and the SLAC NE18 experiment.

24p.; added topdraw file for figures; WIS-93/48/Jun-PH

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