Elsevier

Nuclear Physics B

Volume 101, Issue 1, 22 December 1975, Pages 1-18
Nuclear Physics B

Measurement of differential cross sections for radiative pion-proton capture in the second resonance region

https://doi.org/10.1016/0550-3213(75)90289-8Get rights and content

Abstract

Differential cross-section measurements for πp → γn, consisting of three angular distributions at 618, 676 and 718 MeV/c, and the energy dependence at θγ = 90° for seven incident pion momenta between 502 and 888 MeV/c, are presented. Our data qualitatively support recent multipole analyses. Agreement with the Scheffler et al. results for the inverse reaction, γn → πp, using a (π-recoil p) coincidence technique is good excluding a large violation of time reversal invariance. The agreement with γn → πp data obtained using the R(π/π+) ratio technique or a deuterium bubble chamber is only qualitative.

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  • Work supported in part by ERDA.

    ∗∗

    Present address: SUNY, Buffalo, New York 14222.

    ∗∗∗

    Present address: Physics Dept., Univ. of Virginia, Charlottesville, Va. 22901

    Present address: Physics Dept., Harvard University, Cambridge, Mass. 02138.

    ★★

    Present address: Physics Dept., Yale University, New Haven, Conn. 06520

    ★★★

    Present address: Physics Dept., Syracuse University, Syracuse, NY 13210

    Present address: Physik Institut der Universität Zürich, Zürich, Switzerland.

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