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
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.