Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 44: Electromagnetic and Hadronic Probes VII

HK 44.6: Talk

Thursday, March 11, 2004, 18:15–18:30, B

Photo- and electroproduction of pentaquark on deuterium — •Vadim Guzey¹ and Maxim Polyakov² — ¹Ruhr-Universität Bochum, Univesität Str., 150 — ²Liege University, Belgium

After initial reports about the discovery of the exotic pentaquark state Theta+, a new generation of high precision dedicated experiments will study particular properties of Theta+ such as parity, spin and isospin. We examine various mechanisms of photo and electroproduction of Theta+ on deuterium with a particular emphasize on the strangeness tagging process gamma+D -> Lambda + Theta+. We calculate the rate of this and similar reactions in the kinematics of SPRING-8, JLab, ELSA and GRAAL. We estimate the possible background and conclude that there is kinematics where the signal extraction from the data is possible with high precision.