Experiment to observe the spin precession of channeled relativistic Σ+ hyperons
Abstract
Spin precession of channeled particles in bent crystals has been observed for the first time. Polarized Σ+ were channeled using bent Si crystals. These crystals provided an effective magnetic field of 45 T which resulted in measured spin precession of 60° ± 17°. This agrees with the prediction of 62° ± 2° using the world average of Σ+ magnetic moment measurements. This new technique gives a Σ+ magnetic moment of (2.40 ± 0.46 ± 0.40) μn where the quoted uncertainties are statistical and systematic, respectively. We see no evidence of depolarization in the channeling process.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- October 1996
- DOI:
- 10.1016/0168-583X(96)00187-5
- Bibcode:
- 1996NIMPB.119..266K