2018 Impact factor 2.481
Hadrons and Nuclei
Eur. Phys. J. A 2, 301-310

Coherent vector meson production from deuterons

L. Frankfurt1,4 - G. Piller2 - M. Sargsian2,5 - M. Strikman3,4

1 School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978 Israel
2 Physik Department, Technische Universität München, D-85747 Garching, Germany
3 Pennsylvania State University, University Park, PA 16802, USA
4 Institute for Nuclear Physics, St. Petersburg, Russia
5 Yerevan Physics Institute, Yerevan 375036, Armenia

Received: 22 January 1998 Communicated by A. Schäfer

Abstract
In this paper we discuss coherent photo- and leptoproduction of vector mesons from deuterons at intermediate (virtual) photon energies, $ 3 \leq \nu \leq 30\,GeV$. We consider the scattering from unpolarized and polarized targets as well as processes where the polarization of the recoil deuteron is measured. Our main motivation results from the need for a quantitative analysis of the space-time structure of photon-induced processes. In this respect we suggest several possibilities to explore the characteristic longitudinal interaction length in coherent vector meson production. Furthermore, we outline methods for an investigation of color coherence effects. Besides the presentation of benchmark values for the maximal possible color coherence effect in various kinematic regions, we illustrate the anticipated phenomena within the color diffusion model. Finally we recall that the determination of vector meson-nucleon cross sections is not a closed issue. Besides being not known to a satisfying accuracy, they can be used to determine the strength of the D-state in low mass vector mesons.

PACS
12.40.Vv Vector-meson dominance - 25.30.Rw Electroproduction reactions


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