Neutron energy-angle distributions from 800 MeV proton-proton inelastic scattering
Journal Article
·
· Phys. Rev. C; (United States)
Complete neutron double differential cross sections, (d/sup 2/sigma/d..cap omega.. dE)(theta,E), have been measured for the reaction p+p..-->..n+p+..pi../sup +/. Approximately 200 000 events have been collected, resulting in cross sections of approximately 10 percent accuracy. The energy spectrum at all angles shows an enhancement that is consistent with large amounts of ..delta../sup + +/(1232) isobar production followed by the decay ..delta../sup + +/..-->..p+..pi../sup +/. At the peak of the enhancement d/sup 2/sigma/d..cap omega.. dE in the c.m. drops smoothly from 50 ..mu..b sr/sup -1/ MeV/sup -1/ at 0/sup 0/ to 15 ..mu..b sr/sup -1/ MeV/sup -1/ at 90/sup 0/. The c.m. angular distributions for fixed p..pi../sup +/ recoil mass are of the form A+B cos/sup 2/theta+C cos/sup 4/theta with C consistent with zero, in qualitative agreement with the Mandelstam model. Some recent models give reasonable fits to the data with few parameters. The total integrated cross section is found to be sigma(pp..-->..np..pi../sup +/) = 16.0 +- 1.5 mb.
- Research Organization:
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131
- OSTI ID:
- 5664742
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:4; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of pion-proton bremsstrahlung for pions at 299 MeV
Charged pion production from neutron--proton collisions at 790 MeV. [Differential cross sections, symmetry]
A STUDY OF THE $pi$$sup +$ IN THE REACTION $pi$$sup -$ + p $Yields$ $pi$$sup +$ + $pi$$sup -$ + n AT 365 AND 432 Mev (thesis)
Journal Article
·
Mon Aug 01 00:00:00 EDT 1988
· Phys. Rev. D; (United States)
·
OSTI ID:6854361
Charged pion production from neutron--proton collisions at 790 MeV. [Differential cross sections, symmetry]
Technical Report
·
Thu Sep 01 00:00:00 EDT 1977
·
OSTI ID:7281524
A STUDY OF THE $pi$$sup +$ IN THE REACTION $pi$$sup -$ + p $Yields$ $pi$$sup +$ + $pi$$sup -$ + n AT 365 AND 432 Mev (thesis)
Technical Report
·
Wed Jan 16 23:00:00 EST 1963
·
OSTI ID:4719064
Related Subjects
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIRECT REACTIONS
EFFECTIVE MASS
ELECTRON REACTIONS
FERMI GAS MODEL
FUNCTIONS
LEPTON REACTIONS
MASS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR REACTIONS
POTENTIALS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RESPONSE FUNCTIONS
SCATTERING
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIRECT REACTIONS
EFFECTIVE MASS
ELECTRON REACTIONS
FERMI GAS MODEL
FUNCTIONS
LEPTON REACTIONS
MASS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR REACTIONS
POTENTIALS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RESPONSE FUNCTIONS
SCATTERING