Compton scattering on the proton at energies up to 400 MeV and finite-energy sum rules

Journal Article · Thu Oct 01 04:00:00 EDT 1981 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5670573

L'vov, A I

Fixed-t dispersion relations of the finite-energy sum-rule type are proposed for the ..gamma..p scattering amplitudes. The asymptotic contributions which occur are estimated quite accurately by the use of approximate conservation of the s-channel helicity in Compton scattering. The free parameter of the theory: the difference between the electric (..cap alpha..) and magnetic (..beta..) polarizabilities of the proton: is determined from a fit to the experimental data and is found to have the value ..cap alpha..-..beta.. = (5--16) x 10/sup -43/ cm/sup 3/. The calculated values of the cross sections and of the asymmetry of ..gamma..p scattering at energies up to 400 MeV are in satisfactory agreement with experiment. The generally accepted sign of the ..pi../sup 0/..-->..2..gamma.. decay constant is preferred in this approach.

• Research Organization: P. N. Lebedev Physics Institute, USSR Academy of Sciences
• OSTI ID: 5670573
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 34:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ASYMMETRY
BASIC INTERACTIONS
BOSONS
COMPTON EFFECT
CROSS SECTIONS
DECAY
DISPERSION RELATIONS
ELASTIC SCATTERING
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
HADRONS
HELICITY
INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PHOTON-PROTON INTERACTIONS
PHYSICAL PROPERTIES
PIONS
PIONS NEUTRAL
POLARIZABILITY
PSEUDOSCALAR MESONS
SCATTERING
SCATTERING AMPLITUDES
SUM RULES