pi. /sup 0/ photoproduction near threshold on hydrogen, deuterium, /sup 3/He, and /sup 4/He

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.21.1416· OSTI ID:5410417

Argan, P; Audit, G; Bloch, A; de Botton, N; Faure, J L; Schuhl, C; Tamas, G; Tzara, C; Vincent, E; Deutsch, J; Favart, D; Prieels, R; Van Oystaeyen, B

Relative measurements of ..pi../sup 0/ photoproduction yields have been performed on hydrogen, deuterium, /sup 3/He, and /sup 4/He, in the region of 1 to 10 MeV above threshold. A simplified distorted-wave impulse approximation model of the four reactions is described; it leads to an overall understanding of the results. Large rescattering effects are brought to evidence in deuterium and /sup 3/He, making the extraction of precise values for the dipole photoproduction amplitudes E/sub 0/+ on nucleons strongly dependent on the theoretical description of the processes.

• Research Organization: DPhN/HE, CEN Saclay, BP 2, 91190 Gif-sur-Yvette, France
• OSTI ID: 5410417
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 21:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651225* -- Nuclear Properties & Reactions
A=1-5
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
BASIC INTERACTIONS
BOSONS
BREMSSTRAHLUNG
DEUTERIUM TARGET
DISTORTED WAVE THEORY
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HELIUM 3 TARGET
HELIUM 4 TARGET
HYDROGEN 1 TARGET
IMPULSE APPROXIMATION
INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 01-10
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PION-NUCLEON INTERACTIONS
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
RADIATIONS
SCATTERING AMPLITUDES
SPIN FLIP
TARGETS
THRESHOLD ENERGY