Muon Capture in Hyperfine States of Muonic Deuterium

Abstract

Muon capture rates from the doublet and quartet states are carefully studied as the functions of the πNΔ coupling constants, co and d 1 , and the induced pseudoscalar form factor g p . Evaluation of the exchange current effects is still sensitive to the magnitudes of c 0 and d 1 , although there are almost no ambiguities due to nuclear structure. We found that the ratio of the capture rates from these two hyperfine states is insensitive to c 0 and d 1 , but fairly sensitive to g p . This is very useful to test PCAC in detail