ISSN - 05562813, EISSN - 1089490X, Physical Review C - Nuclear Physics, 2002, vol. 65, p. 340091-340099

Quasifree bremsstrahlung in the dp→dp γ reaction above the pion production threshold

Greiff J., Koch I., Scobel W., Rohdjeß H., Dyring J., Fransson K., Gustafsson L., Häggström S., Höistad B., Johanson J., Johansson A., Johansson T., Khoukaz A., Kullander S., Ruber R. J M Y, Złomańczuk J., Dunin V., Morosov B., Sukhanov A., Zernov A., Stepaniak J., Bilger R., Brodowski W., Clement H., Wagner G. J., Calén H., Ekström C., Kupść A., Marciniewski P., Zabierowski J., Shwartz B., Sukhanov A., Oelert W., Sefzick T., Turowiecki A.

Experimental results of the dp→dp γ reaction are presented for several observables with deuteron projectile energies between 437 MeV and 559 MeV. The kinematically complete measurements were performed at the CELSIUS storage ring with the PROMICE/WASA setup. Angular and spectral distributions of the charged ejectiles are decomposed into fractions that can be attributed to a quasifree np→d γ process with a spectator proton and to a process involving all three nucleons. Within the acceptance of the detector, about two thirds of the events are associated to the quasifree process; the remainder are characterized by substantial transverse momentum components transferred to a participating outgoing proton.