New Upper Limit on the Width of the X0 (958)
Abstract
An upper limit ΓX0<0.8 MeV/c2 (95% confidence level) is deduced from the missing-mass spectrum near 958 MeV/c2 in the reaction π-+p-->MM+n close to threshold. Measurement of those missing masses which decay to 2γ shows a single peak with a central mass of 957.4 +/- 0.5 MeV/c2 close to the value of 957.46 +/- 0.33 MeV/c2 deduced from the total missing-mass spectrum.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 1974
- DOI:
- 10.1103/PhysRevLett.32.425
- Bibcode:
- 1974PhRvL..32..425D