Beta decay and muon capture in thenuclei: Second-class currents and conserved-vector current
- 1 July 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 16 (1), 397-407
- https://doi.org/10.1103/physrevc.16.397
Abstract
A fairly detailed analysis is given of the available experimental data on , , and making use of the "elementary-particle" treatment. Our results indicate that the variation with energy of the asymmetry coefficients obtained by Sugimoto et al. cannot be reconciled with the observed value of the muon capture rate on the hypothesis (A) of gross violation of ("strong") conserved vector current and absence of second-class axial currents and can be reconciled only with great difficulty on the alternative hypothesis (B) of validity of (strong) conserved vector current and presence of relatively large second-class axial currents. On the other hand, a good fit to the observed muon capture rate can be obtained on the hypothesis (C) of (strong) conserved vector current, ("suitably corrected") partially conserved axial vector current, and absence of second-class axial currents. This last hypothesis leads, of course, to a prediction for the variation with energy of the asymmetry coefficients in contradiction to the results of Sugimoto et al. We also find that the magnitude of the recoil polarization obtained by Possoz et al. agrees with that calculated on hypothesis (C) but not with those calculated on hypotheses (A) or (B).
Keywords
This publication has 24 references indexed in Scilit:
- Induced tensor and pseudotensor form factors in the reactionμ− + C12→B12 + νμPhysical Review D, 1977
- Weak magnetism and the beta spectra of 12B and 12NNuclear Physics A, 1976
- Second-class currentsPhysical Review D, 1976
- Conserved anomalous weak currentsPhysical Review D, 1976
- μ−capture onC12and the tensor form factorPhysical Review D, 1976
- Beta-Decay Asymmetries in Polarized 12 B and 12 N, and the G -Parity NonconservationProgress of Theoretical Physics Supplement, 1976
- Energy-dependent anisotropy of beta-rays and second-class currentsPhysics Letters B, 1975
- Asymmetry of Beta-Ray Angular Distribution in Polarized Nuclei andG-Parity NonconservationPhysical Review Letters, 1975
- -Decay Asymmetries in Polarizedandand the-Parity-Nonconserving Weak InteractionPhysical Review Letters, 1975
- Experimental Test of the Conserved Vector Current Theory on the Beta Spectra ofB12andN12Physical Review Letters, 1963