Probing the partonic structure of pentaquarks in hard electroproduction
arXiv:hep-ph/0312125 · doi:10.1016/j.physletb.2004.01.023
Abstract
Exclusive electroproduction of a K or K* meson on the nucleon can give a Theta+ pentaquark in the final state. This reaction offers an opportunity to investigate the structure of pentaquark baryons at parton level. We discuss the generalized parton distributions for the N-->Theta+ transition and give the leading order amplitude for electroproduction in the Bjorken regime. Different production channels contain complementary information about the distribution of partons in a pentaquark compared with their distribution in the nucleon. Measurement of these processes may thus provide deeper insight into the very nature of pentaquarks.
17 pages, 8 figures. v2: minor clarifications, references added
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