H2(p,pp)nreaction at 23 MeV

A kinematically complete experiment that examines the ${}_{}{}^2{}_{}{}^{}\mathrm{H}(p,pp)n$ reaction at several quasifree angles has been performed. The results are compared with calculations performed with a program based on the code of Ebenhöh that solves the Faddeev equations with separable two-body potentials. The calculations are compared with two other programs that use a different integration contour, and the numerical differences are found to be small. The Ebenhöh code is used with three $S$-wave Yamaguchi potentials. Two of the potentials differ primarily in their predictions of the singlet $p-p$ scattering length. The third potential fits the two-body $np$ and $pp$ scattering data below 30 MeV. The potentials give generally good fits to the breakup data, but do not provide a precise fit to the angular distribution for the quasifree peaks. The potentials themselves differ by about 30% in the predicted quasifree peaks. The calculations explictly show that interference effects are important. It is concluded that a precise fit to the $N-N$ data is not sufficient alone to guarantee a fit to quasifree deuteron breakup data and that the Yamaguchi form factor is inadequate for this purpose.