Abstract
The production and decay properties of the meson are studied in the reaction at 5 GeV/c, where a cross section of 98±16 μb is found for the final state . The production angular distribution of the shows a forward peak, a possible shoulder at Ge, and a small backward peak. The most likely spin-parity assignment for the is found to be , and the -wave fraction in the decay is ∼ 11%. The differential cross section and density matrix elements of the suggest a dominant -exchange contribution. The suppression of exchange is also apparent in a study of the reaction . We obtain for Ge an estimated cross section of 15±12 μb for production, which is about 5 times smaller than that of at the same region. The reaction , extrapolated to the pion pole, is found to yield near the threshold cross sections smaller than previously expected.
- Received 19 February 1974
DOI:https://doi.org/10.1103/PhysRevD.10.3608
©1974 American Physical Society