Measurement of the correlation between alignment and electron momentum in /sup 12/B. -->. /sup 12/C(g. s. ) decay by a novel technique: Another search for second-class currents
Journal Article
·
· Phys. Rev. Lett.; (United States)
Gradient couplings (weak magnetism, induced-second-class tensor) and recoil terms manifest themselves specifically through a parameter ..cap alpha../sub -/ in the angular distribution of 1/sup +/ ..-->.. 0/sup +/ ..beta../sup -/ decays of oriented nuclei, i.e., of /sup 12/B to /sup 12/C(g.s.). To decide between two contradictory results, we have redetermined ..cap alpha../sub -/ by a direct measurement of the alignment correlation term, A..cap alpha../sub -/EP/sub 2/(theta), with a novel technique. We find ..cap alpha../sub -/ = + 0.24 +- 0.44 GeV/sup -1/, thereby confirming the Louvain result, and ruling out a ''large'' second-class current.
- Research Organization:
- Laboratory for Nuclear Physics, Swiss Federal Institute of Technology, 8093 Zurich, Switzerland
- OSTI ID:
- 5200198
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 40:5; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645302 -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Electromagnetic & Weak Interactions-- (-1987)
651322* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Radioactive Decay-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ANGULAR DISTRIBUTION
ASYMMETRY
AXIAL-VECTOR CURRENTS
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BORON 12
BORON ISOTOPES
CARBON 12
CARBON ISOTOPES
CORRELATIONS
CURRENTS
DECAY
DISTRIBUTION
ENERGY LEVELS
EVEN-EVEN NUCLEI
GROUND STATES
INTERACTIONS
ISOTOPES
LEPTONIC DECAY
LIGHT NUCLEI
NUCLEAR ALIGNMENT
NUCLEI
ODD-ODD NUCLEI
ORIENTED NUCLEI
PARTICLE DECAY
RADIOISOTOPES
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
WEAK INTERACTIONS
WEAK PARTICLE DECAY
ZEEMAN EFFECT
651322* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Radioactive Decay-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ANGULAR DISTRIBUTION
ASYMMETRY
AXIAL-VECTOR CURRENTS
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BORON 12
BORON ISOTOPES
CARBON 12
CARBON ISOTOPES
CORRELATIONS
CURRENTS
DECAY
DISTRIBUTION
ENERGY LEVELS
EVEN-EVEN NUCLEI
GROUND STATES
INTERACTIONS
ISOTOPES
LEPTONIC DECAY
LIGHT NUCLEI
NUCLEAR ALIGNMENT
NUCLEI
ODD-ODD NUCLEI
ORIENTED NUCLEI
PARTICLE DECAY
RADIOISOTOPES
SECOND-CLASS CURRENTS
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
WEAK INTERACTIONS
WEAK PARTICLE DECAY
ZEEMAN EFFECT