Proton-Proton Bremsstrahlung at 797 MeV/c


Proton-Proton Bremsstrahlung at 797 MeV/c

Bilger, R.; Böhm, A.; Brand, H.; Brand, S.; Brinkmann, K.-T.; Clement, H.; Cloth, P.; Dahmen, M.; Dshemuchadse, S.; Eyrich, W.; Filges, D.; Freiesleben, H.; Fritsch, M.; Geyer, R.; Hassan, A.; Hauffe, J.; Herrmann, P.; Hübner, B.; Jahn, P.; Kilian, K.; Koch, H.; Kress, J.; Krug, J.; Kuhlmann, E.; Lange, J. S.; Metzger, A.; Michel, P.; Möller, K.; Morsch, H. P.; Nake, C.; Nann, H.; Naumann, B.; Naumann, L.; Ringe, P.; Roderburg, E.; Rogge, M.; Schamlott, A.; Schönmeier, P.; Schülke, A.; Steinke, M.; Stinzing, F.; Turek, P.; Wagner, G. J.; Wirth, S.; Zielinski, U.

At COSY pp-bremsstrahlung was measured at a beam momentum of 797 MeV/c using an external proton beam. Data were taken with a wide angle spectrometer covering a solid angle of approximately 1 sr. The complete data set is presented in a series of c.m. angular distributions as well as a single Dalitz plot. The absence of final state interaction effects is understood as being due to a general insensitivity of the pp γ reaction to the spin-singlet component of the NN interaction. Coplanar angular distributions (in the laboratory system) are well reproduced by recent model calculations; also good agreement is found with the original TRIUMF data [K. Michaelian et al., Phys. Rev. D 41 (1990) 286] when omitting the rescaling factor of 2/3.

  • Phys. Lett. B. 429 (1998) 195-200

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Publ.-Id: 2879