Neutral pion photoproduction on the proton and the cloudy-bag model

Journal Article · Thu Aug 20 00:00:00 EDT 1992 · International Journal of Modern Physics A; (United States)

DOI:https://doi.org/10.1142/S0217751X92002398· OSTI ID:7012286

Tabachenko, A N ^[1]

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1. Nuclear Physics Inst. Tomsk (USSR)

This paper reports on the cloudy-bag model, in which the value of the electric dipole amplitude of the photoproduction of neutral pions off protons at threshold connected with the additional contribution from the chiral symmetry breaking interaction is evaluated. If this additional contribution is included in the amplitude of the photoproduction of neutral pions off protons at threshold, the discrepancy between the LET predictions and the measured value of the electric dipole amplitude E[sup p [pi]][sup 0][sub 0+] can be resolved for the values of quark masses and bag radii which are close to the generally used values.

• OSTI ID: 7012286
• Journal Information: International Journal of Modern Physics A; (United States), Journal Name: International Journal of Modern Physics A; (United States) Vol. 7:21; ISSN IMPAEF; ISSN 0217-751X
• Country of Publication: United States
• Language: English

Related Subjects

662240* -- Models for Strong Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BAG MODEL
BARYONS
BASIC INTERACTIONS
BOSONS
CHIRAL SYMMETRY
COMPOSITE MODELS
DECAY AMPLITUDES
DIPOLE MOMENTS
ELECTRIC DIPOLE MOMENTS
ELECTRIC MOMENTS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY TRANSFER
EXTENDED PARTICLE MODEL
FERMIONS
HADRONS
INTERACTIONS
LET
MASS SPECTRA
MATHEMATICAL MODELS
MESONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE RADII
PHOTOPRODUCTION
PIONS
POSTULATED PARTICLES
PROTONS
PSEUDOSCALAR MESONS
QUARK MODEL
QUARKS
SPECTRA
SYMMETRY
SYMMETRY BREAKING
THRESHOLD ENERGY
TRANSITION AMPLITUDES