Theory of bremsstrahlung amplitudes in the soft-photon approximation

Journal Article · Sun Feb 01 04:00:00 EST 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.35.651· OSTI ID:6727925

Liou, M K; Ding, Z M

A general parametrization which enables us to construct all possible approximations to the bremsstrahlung amplitude is applied to explore generalizations of existing soft-photon approximations. We establish the existence of theoretical ambiguity in defining the soft-photon approximations and we show how the bremsstrahlung cross section calculated from a soft-photon amplitude depends on the parameters. We also show that if the bremsstrahlung spectrum exhibits resonant structure, then the position of this structure K/sub ..gamma../ and its width GAMMA/sub ..gamma../ can be predicted by either performing the detailed bremsstrahlung calculation or using two simple formulas which relate K/sub ..gamma../ and GAMMA/sub ..gamma../ directly to the resonant energy E/sub R/ and the width GAMMA/sub el/ of the resonant structure observed in the elastic scattering cross sections. This new information about K/sub ..gamma../ and GAMMA/sub ..gamma../ can be used to study the validity of any bremsstrahlung amplitude.

• Research Organization: Department of Physics and Institute for Nuclear Theory, Brooklyn College of the City University of New York, Brooklyn, New York 11210
• OSTI ID: 6727925
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 35:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
BARYON REACTIONS
BREMSSTRAHLUNG
CARBON 12
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELASTIC SCATTERING
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
HADRON REACTIONS
INELASTIC SCATTERING
ISOTOPES
LIGHT NUCLEI
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESON REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PHOTONS
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
PROTON REACTIONS
RADIATIONS
RESONANCE SCATTERING
SCATTERING
SCATTERING AMPLITUDES
SHELL MODELS
STABLE ISOTOPES