Measurement of the Σ- magnetic moment using the Σ--->ne-ν¯ and Σ--->nπ- decay modes
Abstract
We have used the spin-precession technique to measure the Σ- magnetic moment (μΣ). A Σ- beam with a polarization of 22% was produced by a 400-GeV proton beam striking a Cu target at nominal production angles of +/-3 mrad. We simultaneously recorded 210 Σ--->ne-ν¯ decays and 6500 Σ--->nπ- decays at Σ- beam momenta of 253 and 308 GeV/c. We find that μΣ=-1.166+/-0.014+/-0.010 nuclear magnetons, where the quoted errors are statistical and systematic, respectively.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1986
- DOI:
- 10.1103/PhysRevLett.57.1526
- Bibcode:
- 1986PhRvL..57.1526Z
- Keywords:
-
- 13.40.Fn;
- 13.30.-a;
- 14.20.Jn;
- Decays of baryons;
- Hyperons