Differential cross section for proton-proton bremsstrahlung at 1. 38 GeV/c

Journal Article · Thu Mar 01 04:00:00 EST 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.19.877· OSTI ID:6206608

Nefkens, B M.K.; Sander, O R; Sober, D I; Fearing, H W

We present the differential cross section for proton-proton bremsstrahlung at an incident beam momentum of 1.38 GeV/c (730 MeV). The measurements are made with an overconstrained detection system to reliably exclude all pp ..-->.. pp..pi../sup 0/ events. We have obtained differential cross sections at 16 photon angles at photon energies up to 200 MeV for protons scattered at 50/sup 0/ (lab). For each of the photon angles, d/sup 5/sigma/d..cap omega../sub p/d..cap omega../sub ..gamma../dE/sub ..gamma../ decreases smoothly with increasing photon energy up to E/sub ..gamma../(lab) approx. = 80 MeV. Above this photon energy the cross sections rise again. Our results are compared with the soft photon approximation and the external emission dominance calculations. The soft pion approximation describes most spectra fairly well up to E/sub ..gamma../ approx. = 100 MeV and external emission dominance up to E/sub ..gamma../ approx. = 60 MeV (lab), but both predict cross sections which are too small at the highest photon energies.

• Research Organization: Department of Physics, University of California, Los Angeles, California
• OSTI ID: 6206608
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 19:3; ISSN PRVCA
• 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
AMPLITUDES
ANGULAR DISTRIBUTION
BARYON REACTIONS
BREMSSTRAHLUNG
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
HADRON REACTIONS
HYDROGEN 1 TARGET
MASSLESS PARTICLES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON REACTIONS
PHOTONS
PROTON REACTIONS
RADIATIONS
SCATTERING AMPLITUDES
SPECTRA
TARGETS