Average polarization of the recoil /sup 12/B from muon capture by /sup 12/C
Journal Article
·
· Phys. Rev., C; (United States)
It is shown, in the ''elementary-particle'' treatment, that, if the source to produce the background /sup 12/B(g.s.) comes only from the cascade processes ..mu../sup -/ /sup 12/C(g.s.) ..-->.. ..nu../sub ..mu../ /sup 12/B*(2.62) ..-->.. ..nu../sub ..mu../ /sup 12/B(g.s.) ..gamma.., the average polarization of the recoil /sup 12/B(g.s.) produced by the direct polarized-muon capture ..mu../sup -/ /sup 12/C(g.s.) ..-->.. ..nu../sub ..mu../ /sup 12/B(g.s.) can be extracted reliably from the observed angular distribution of the electrons in the subsequent beta decays of /sup 12/B(g.s.). Using the recent data of Possoz et al., our result for the average polarization P/sub av/ of the recoil /sup 12/B(g.s.) from the direct polarized-muon capture is P/sub av/ =0.47 +- 0.05, which agrees very well with the prediction of the standard picture, namely, conservation of vector current, partial conservation of axial vector current, and absence of second-class axial currents.
- Research Organization:
- Department of Physics, FM-15, University of Washington, Seattle, Washington 98195
- OSTI ID:
- 6090152
- Journal Information:
- Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:2; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
651315* -- Nuclear Properties & Reactions
A=6-19
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ANGULAR DISTRIBUTION
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORON 12
BORON ISOTOPES
CAPTURE
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CURRENTS
DECAY
DISTRIBUTION
FUNCTIONS
IMPULSE APPROXIMATION
ISOTOPES
LEPTON REACTIONS
LIGHT NUCLEI
MUON REACTIONS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
PCAC THEORY
POLARIZED PRODUCTS
RADIOISOTOPES
RECOILS
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES
TARGETS
WAVE FUNCTIONS
A=6-19
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ANGULAR DISTRIBUTION
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORON 12
BORON ISOTOPES
CAPTURE
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CURRENTS
DECAY
DISTRIBUTION
FUNCTIONS
IMPULSE APPROXIMATION
ISOTOPES
LEPTON REACTIONS
LIGHT NUCLEI
MUON REACTIONS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
PCAC THEORY
POLARIZED PRODUCTS
RADIOISOTOPES
RECOILS
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES
TARGETS
WAVE FUNCTIONS