{beta} asymmetry parameter in the decay of {sup 114}In

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.062501· OSTI ID:21296561

Wauters, F; Leebeeck, V De; Kraev, I; Tandecki, M; Traykov, E; Gorp, S Van; Severijns, N; Zakoucky, D ^[1]

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1. Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven (Belgium)

The {beta}-asymmetry parameter A-tilde for the pure Gamow-Teller decay of {sup 114}In is reported. The low-temperature nuclear orientation method was combined with a GEANT4-based simulation code allowing us, for the first time, to address in detail the effects of scattering and the magnetic field. The result, A-tilde=-0.994{+-}0.010{sub stat}{+-}0.010{sub syst}, constitutes the most accurate value for the asymmetry parameter of a nuclear {beta} transition to date. The value is in agreement with the Standard Model prediction of A-tilde=-1 and provides new limits on tensor-type charged weak currents.

• OSTI ID: 21296561
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
DECAY
FORECASTING
GAMOW-TELLER RULES
INDIUM 114
MAGNETIC FIELDS
SCATTERING
SIMULATION
STANDARD MODEL
WEAK CHARGED CURRENTS