Abstract
The reaction γ+d → π++π− +p + n has been measured in a kinematically complete way at incident photon energies from 570 to 850 MeV in steps of 40 MeV. From detailed comparison of measured data with results of event simulations, it is concluded that three different mechanisms, the quasi-free, double-delta and phase space productions, contribute to the reaction. Each of the cross sections corresponding to these mechanisms is determined separately.
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We would like to thank Professor S. Yamada and Professor H. Okuno for their support and encouragement. Thanks are also due to the operating crew of the electron synchrotron. We express our gratitude to the staff of the computer room at INS for various technical assistance in data analysis. Part of this work was financially supported by the Grant-in-Aid for Special Project Research on Meson Science of the Ministry of Education, Science and Culture of Japan.
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Asai, M., Endo, I., Harada, M. et al. The reaction γ +d → π+ + π− +p + n between 570 and 850 MeV andΔ ++ Δ − production. Z. Physik A - Hadrons and Nuclei 344, 335–344 (1992). https://doi.org/10.1007/BF01303029
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DOI: https://doi.org/10.1007/BF01303029