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Determination of the quadratic slope parameter in eta-->3pi(0) decay.
- Source :
-
Physical review letters [Phys Rev Lett] 2001 Nov 05; Vol. 87 (19), pp. 192001. Date of Electronic Publication: 2001 Oct 22. - Publication Year :
- 2001
-
Abstract
- We have determined the quadratic slope parameter alpha for eta-->3pi(0) to be alpha = -0.031(4) from a 99% pure sample of 10(6)eta-->3pi(0) decays produced in the reaction pi(-)p-->n(eta) close to the eta threshold using the Crystal Ball detector at the AGS. The result is four times more precise than the present world data and disagrees with current chiral perturbation theory calculations by about four standard deviations.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 87
- Issue :
- 19
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 11690403
- Full Text :
- https://doi.org/10.1103/PhysRevLett.87.192001