''Soft-pion'' production in the reaction NN. -->. NN. pi
Journal Article
·
· Phys. Rev., D; (United States)
We examine the reaction NN..-->..NN..pi.. for ''soft-pion'' kinematics (p/sub ..pi../=0 in the center of mass). An earlier calculation based on the Adler-Dothan theorem severely underestimated the p/sub ..pi../=0 cross section for pp..-->..np..pi../sup +/ at 740 MeV. We attempt to understand this discrepancy in the context of a relativistic, unitary, three-body isobar model. The postemission ..delta..-pole contributions are shown to be very important, even for these ''soft-pion'' kinematics. Relatively high partial waves in the NN..-->..N..delta.. isobar amplitude are significant. However, after summing all the postemission and preemission diagrams, the discrepancy with experiment is only partially removed.
- Research Organization:
- Theoretical Division, Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545
- OSTI ID:
- 6814997
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 22:11; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
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Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
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ENERGY RANGE
HADRON-HADRON INTERACTIONS
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