One-pion-exchange model analysis of the $delta$$sup ++$(1236) region and of the n$pi$$sup +$ low-mass enhancement
Journal Article
·
· Nucl. Phys., B, v. B67, no. 2, pp. 284-308
OSTI ID:4345323
New data on the reaction pp yields pn pi /sup +/ between 12 and 24 GeV/ c are compared with the predictions of an absorptive one-pionexchange (APE) model. It is found that the dependence of the absorptive corrections in the APE model on the p pi /sup +/ mass is very similar to that observed for the pi /sup +/ pi / sup -/ mass in the reaction pi /s up -/p yields pi /sup +/ pi /sup -/n. Furthermore, it is shown that the APE model is in good agreement with the experimental data for various multi-dimensional distributions and also with the overall normalization. For comparison the predictions of a reggeized one-pion- exchange (RPE) medel are also shown. Whereas the APE model is able to describe the properties of the DELTA /sup ++/(1236), the RPE model fails to explain the decay distributions of this resonance. Both models yield a good description of the production and decay properties of the n pi /sup +/ low-mass enhancement. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-29-022451
- OSTI ID:
- 4345323
- Journal Information:
- Nucl. Phys., B, v. B67, no. 2, pp. 284-308, Journal Name: Nucl. Phys., B, v. B67, no. 2, pp. 284-308; ISSN NUPBB
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
*DELTA-1236 RESONANCES-- PARTICLE PRODUCTION
*PROTON-PROTON INTERACTIONS-- OPE MODEL
ABSORPTION
GEV RANGE 10-100
N64130* --Physics (High Energy)--Particle Interactions & Properties (Experimental)--Strong (Baryon-induced)
N64270 --Physics (High Energy)--Particle Interactions & Properties (Theoretical)--Strong (Baryon No. >= 2)
NEUTRONS
PIONS PLUS
REGGE POLES
*PROTON-PROTON INTERACTIONS-- OPE MODEL
ABSORPTION
GEV RANGE 10-100
N64130* --Physics (High Energy)--Particle Interactions & Properties (Experimental)--Strong (Baryon-induced)
N64270 --Physics (High Energy)--Particle Interactions & Properties (Theoretical)--Strong (Baryon No. >= 2)
NEUTRONS
PIONS PLUS
REGGE POLES