LEFT-RIGHT ASYMMETRY IN (P)OVER-BARP-]PI-PI+

Authors
Citation
G. Bathas et Wm. Kloet, LEFT-RIGHT ASYMMETRY IN (P)OVER-BARP-]PI-PI+, Physical review. C. Nuclear physics, 47(5), 1993, pp. 2207-2212
Citations number
13
Categorie Soggetti
Physics, Nuclear
ISSN journal
05562813
Volume
47
Issue
5
Year of publication
1993
Pages
2207 - 2212
Database
ISI
SICI code
0556-2813(1993)47:5<2207:LAI(>2.0.ZU;2-N
Abstract
Results for dsigma/dOMEGA and A(N) in the reaction ppBAR-->pi-pi+ are predicted by a simple quark model. They are compared to recent experim ental data from the CERN LEAR, as well as to previous predictions from nucleon-exchange models. At low energy the quark model does better th an the nucleon-exchange models, but the overall comparison to experime nt remains poor. In particular, the double-dip structure of the experi mental A(N) data is only partly represented. This shortcoming of the s imple quark model is traced back to a too small J = 2 amplitude. This has interesting implications for the range of this specific annihilati on process.