Published June 3, 1985
| Version v1
Journal article
Measurement of the electron asymmetry in the beta decay of polarized Σ- hyperons
Creators
- 1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637
Description
We report the results of a Fermilab Tevatron experiment using a Σ- beam with a measured polarization of 0.22 +- 0.04. We find the electron asymmetry in Σ- beta decay to be α/sub e/ = -0.53 +- 0.14 on the basis of a sample of 25 000 events, in agreement with the Cabibbo model and in contradiction with previous experiments. The corresponding value for the ratio of axial vector to vector form factors is g1/f1 = -0.29 +- 0.07
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 54
- Journal Issue
- 22
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 2399-2402
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 17001191
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ASYMMETRY; BETA-MINUS DECAY; MULTIWIRE PROPORTIONAL CHAMBER; POLARIZATION; SIGMA MINUS
- Descriptors DEC
- BARYONS; BETA DECAY; DECAY; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HYPERONS; MEASURING INSTRUMENTS; NUCLEAR DECAY; PROPORTIONAL COUNTERS; RADIATION DETECTORS; SIGMA PARTICLES; STRANGE PARTICLES