Spin parity studies of the eta pi decay of the A2 meson and investigation of the A2 production mechanism in the reaction pi-minus proton goes to A2-minus proton

The results of a spin parity analysis of the nv-decay mode of the A-meson produced in the reaction A2-p -A2-pare presented. Data for the analysis are drawn from bubble chamber experiments between 3.9 and 16 GeV/c. The analysis favors JP=Z+ for both the upper and lower regions of the AZ' Possible evidence for a weakly produced JP=l daughter state is also presented. The evidence comes largely from an interference effect observed in the lower AZ region. Using the A-nv-data along with data on the decay channel A2- -> p0pi -at 5.0,7.5 and l1.Z GeV/c, the production mechanism of A2 the A-in the reaction A2-p -A2-P is investigated. Assuming that this reaction is dominated by a t channel exchange mechanism the isospin and J parity of the exchange are investigated. The sand t cross section dependence of the data are compared with a simple Regge model.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2011

Author dc:creator

• Lacy, Jeffrey Linn

Contributors dc:contributor

• Kruse, U.E.

• spin parity
• Eta (η) pi decay
• A2 meson
• A2 production
• meson production

Statement dc:rights

• 1971 Jeffrey Linn Lacy

Language dc:language

en

Identifier

6025727

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/25868