Proton-proton bremsstrahlung at 280 MeV

Journal Article · Tue May 01 00:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.2689· OSTI ID:6864043

Michaelian, K; Kitching, P; Hutcheon, D A; Abegg, R; Coombes, G H; Dawson, W K; Fearing, H W; Fielding, H; Gaillard, G; Green, P; Greeniaus, L G; Hugi, M; Miller, C A; Neilson, G C; Olsen, W C; Soukup, J; Stevenson, N R; Wesick, J; Workman, R L ^[1]

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1. University of Alberta, Edmonton, Alberta, Canada T6G 2J1 (CA) TRIUMF 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3 (CA) University Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0 (CA)

A proton-proton bremsstrahlung experiment has been carried out at TRIUMF using a 280-MeV polarized proton beam impinging on a liquid-hydrogen target. All three outgoing particles were detected: the higher-energy proton in a magnetic spectrometer, the lower-energy proton with plastic scintillators, and the photon in lead-glass Cherenkov detectors. The experiment shows the first unambiguous evidence for off-shell effects in the free nucleon-nucleon interaction, in that the analyzing powers disagree strongly with the predictions of the soft-photon approximation (which incorporates only on-shell information) but are consistent with the results of calculations using the Bonn and Paris potentials.

• OSTI ID: 6864043
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:9; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANALYZING POWER
BARYON-BARYON INTERACTIONS
BEAMS
BREMSSTRAHLUNG
CHERENKOV COUNTERS
COINCIDENCE SPECTROMETRY
CYCLIC ACCELERATORS
CYCLOTRONS
DIAGRAMS
ELASTIC SCATTERING
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
ENERGY RANGE
FEYNMAN DIAGRAM
HADRON-HADRON INTERACTIONS
HYDROGEN
INTERACTIONS
ISOCHRONOUS CYCLOTRONS
MAGNETIC SPECTROMETERS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 100-1000
NONMETALS
NUCLEAR MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
POLARIZED BEAMS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
RADIATION DETECTORS
RADIATIONS
SCATTERING
SHELL MODELS
SPECTROMETERS
THRESHOLD ENERGY
TRIUMF CYCLOTRON