Observables in muon capture on 23Na and the effective weak couplings g̃a and g̃p

B. L. Johnson, T. P. Gorringe, D. S. Armstrong, J. Bauer, M. D. Hasinoff, M. A. Kovash, D. F. Measday, B. A. Moftah, R. Porter, D. H. Wright

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

We report measurements of capture rates and hyperfine dependences in muon capture on 23Na to various states in Ne and F isotopes. We also report comparisons of the capture rates and hyperfine dependences for six 23Na → 23Ne transitions with the 1s-0d shell model with the empirical effective interaction of Brown and Wildenthal and the realistic effective interaction of Kuo and Brown. Fits to the data with the Brown and Wildenthal interaction yield an effective coupling g̃a = -1.01 ± 0.07 and an effective coupling ratio g̃p/g̃a = 6.5 ± 2.4. The value of g̃a is consistent with values of g̃a extracted from β+- decay and (p,n)/(n,p) charge exchange data, and the value of g̃p/g̃a is consistent with the predictions of PCAC and pion-pole dominance. We evaluate the nuclear model dependence of these values of g̃a and g̃p/g̃a and examine the role of the Gamow-Teller and other matrix elements in the 23Na → 23Ne transitions.

Original languageEnglish
Pages (from-to)2714-2731
Number of pages18
JournalPhysical Review C - Nuclear Physics
Volume54
Issue number5
DOIs
StatePublished - Nov 1996

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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