Muon capture on nuclei with N > Z , random phase approximation , and in - medium renormalization of the axial - vector coupling constant
نویسندگان
چکیده
We use the random phase approximation to describe the muon capture rate on 44Ca,48Ca, 56Fe, 90Zr, and 208Pb. With 40Ca as a test case, we show that the Continuum Random Phase Approximation (CRPA) and the standard RPA give essentially equivalent descriptions of the muon capture process. Using the standard RPA with the free nucleon weak form factors we reproduce the experimental total capture rates on these nuclei quite well. Confirming our previous CRPA result for the N = Z nuclei, we find that the calculated rates would be significantly lower than the data if the in-medium quenching of the axial-vector coupling constant were employed. Typeset using REVTEX
منابع مشابه
Muon capture on nuclei with NÌZ , random phase approximation, and in-medium value of the axial-vector coupling constant
We use the random phase approximation to describe the muon capture rate on Ca, Ca, Fe, Zr, and Pb. With Ca as a test case, we show that the continuum random phase approximation ~CRPA! and the standard RPA give essentially equivalent descriptions of the muon capture process. Using the standard RPA with the free nucleon weak form factors we reproduce the experimental total capture rates on these ...
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