Journalartikel

Jahr der Veröffentlichung: 2009

Zeitschrift: Physical Review C

Bandnummer: 79

Heftnummer: 1

ISSN: 0556-2813

eISSN: 1089-490X

DOI Link: https://doi.org/10.1103/PhysRevC.79.015207

Verlag: American Physical Society

Abstract: 
We investigate the early onset of pionic color transparency (pCT) observed at Jefferson Laboratory (JLAB) in semi-exclusive pion electroproduction reaction A(e, e'pi(+)) off nuclei. In the present description the primary. gamma*p -> pi(+)n interaction is described very well both for the longitudinal and the transverse polarizations. For the final state interactions a coupled-channel treatment of the interactions of transmitted hadrons allows to go beyond the Glauber approximation. We show that a proper distinction between the soft hadronic and hard partonic components of the electroproduction amplitude is essential for a quantitative description of the measured nuclear transparency. The data are well reproduced if one assumes that point-like configurations are produced in the regime of hard deep-inelastic scattering (DIS) off partons and dominate the transverse channel.

Harvard-Zitierstil: Kaskulov, M., Gallmeister, K. and Mosel, U. (2009) Pionic transparency in semi-exclusive electroproduction off nuclei, Physical Review C, 79(1), Article 015207. https://doi.org/10.1103/PhysRevC.79.015207

APA-Zitierstil: Kaskulov, M., Gallmeister, K., & Mosel, U. (2009). Pionic transparency in semi-exclusive electroproduction off nuclei. Physical Review C. 79(1), Article 015207. https://doi.org/10.1103/PhysRevC.79.015207