Isospin analysis of the reactions $pi$$sup +-$p $Yields$ $pi$(N$pi$) at 8 GeV/c and comparison with the results at 16 GeV/c
Journal Article
·
· Nucl. Phys., B, v. B66, pp. 93-105
OSTI ID:4357632
An isospin analysis of the reaction pi /sup plus or minus /p yields pi (N pi ) at 8 GeV/c was made and the results are compared with an analogous analysis at 16 GeV/c previously published, to determine the energy dependence of the effects studied. It is found that isospin-zero-exchange processes are dominant in both cases and practically energy independent, isospin-one-exchange processes are less abundant and are decreasing with increasing energy, Interference effects are, at both energies, very small. The broad enhancement between 1.2 and 1.7 GeV in the I = 1/2(N pi ) mass spectrum due to isospin-zero- exchange, previously reported, is now studied in various mass-bins. It is found that (a) all mass intervals have approximately the same weak energy dependence, (b) all mass intervals have exponential do/dt' distributions and (c) the slope of these do/dt' distributions decreases sharply (from -12 to ~3 GeV/sup -2) as the mass increases. The results are consistent with the interpretation of this enhancement as predominantly due to diffraction dissociation of the target proton. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-29-013851
- OSTI ID:
- 4357632
- Journal Information:
- Nucl. Phys., B, v. B66, pp. 93-105, Journal Name: Nucl. Phys., B, v. B66, pp. 93-105; ISSN NUPBB
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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