Vanishing Fermi--Gamow-Teller mixing in the positron decay of /sup 58/Co

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.28.345· OSTI ID:6043391

Lee, W P; Sabbas, A M; Chen, M E; Kravitz, P S; Chirovsky, L M; Groves, J L; Wu, C S

The asymmetry parameter, A/sub ..beta../, in the positron decay of polarized /sup 58/Co has been measured to be +0.341 +- 0.013. Assuming the standard T-invariant V-A weak interaction theory, the Fermi to Gamow-Teller mixing ratio, y = C/sub V/M/sub F//C/sub A/M/sub GT/, was determined to be -0.005 +- 0.008. The vanishing value of y is consistent with the isospin selection rule for the Fermi matrix element.

• Research Organization: Physics Department, Columbia University, New York, New York 10027
• OSTI ID: 6043391
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651522* -- Nuclear Properties & Reactions
A=39-58
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
COBALT 58
COBALT ISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
GAMOW-TELLER RULES
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
INVARIANCE PRINCIPLES
ISOMERIC TRANSITION ISOTOPES
ISOSPIN
ISOTOPES
MATRIX ELEMENTS
NUCLEI
ODD-ODD NUCLEI
PARTICLE PROPERTIES
POLARIZATION
RADIOISOTOPES
SELECTION RULES
T INVARIANCE
WEAK INTERACTIONS