Abstract
A search for a + resonance just above threshold was made by means of the reaction with 46.3-MeV . No resonance was found; the c.m. cross section is ≤1.6 μb/sr at 8.4° c.m. This corresponds to an upper limit on the spectroscopic factor for of 0.0003 to 0.001, depending on the parameters adopted for a distorted-wave Born-approximation calculation. The maximum possible effect of such a resonance on the production of high-energy solar neutrinos is too small to explain the discrepancy between solar-model predictions and the experimental results of Davis et al.
[NUCLEAR REACTIONS: , MeV; measured . Deduced: no - resonance in .]
- Received 2 July 1973
DOI:https://doi.org/10.1103/PhysRevC.8.1226
©1973 American Physical Society