Comparison of the /sup 16/N/sup m/(O/sup -/) beta -decay rate with the inverse muon-capture rate: the induced pseudoscalar form factor in nuclei

Abstract

An experiment to measure the rate lambda /sub beta / of the weak decay /sup 16/N/sup m/(O/sup -/, 120 keV) rarr /sup 16/O(O/sup +/, g.s.)+ beta /sup -/+ nu macr is described. The results are combined with the rate lambda /sub mu / for the inverse reaction mu /sup -/+/sup 16/O(O/sup +/, g.s.) rarr /sup 16/N /sup m/(O/sup -/, 120 keV)+ nu mu to yield a value for g/sub p/ the inverse-pseudoscalar form factor. The result suggests an upward renormalisation.Anglai