Differential cross section and analyzing power of the breakup reaction~H(p, pp)n have been measured in a kinematically complete coincidence experiment for two selected kinematical configurations, the final state interaction and the collinear configuration with the neutron at rest in the c.m. system. Faddeev calculations done with a code by Stuivenberg and in particular with a recent code by Doleschall show good agreement with the data. Even in the collinear case which is assumed to be most sensitive to effects of the three-body force, no influence of three-body forces is observed. Their contribution therefore cannot exceed the experimental error of 2 -3%. The results indicate that contributions from I' and D waves as well as the tensor force are more important than effects from a three-body force.

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