Polarizability of. pi. mesons in the confined quark model

Journal Article · Mon May 01 04:00:00 EDT 1989 · Soviet Journal of Nuclear Physics (English Translation); (USA)

OSTI ID:5354744

Avakyan, E Z; Avakyan, S L; Efimov, G V; Ivanov, M A ^[1]

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1. Joint Institute for Nuclear Research, Dubna (USSR)

The electric polarizabilities {alpha}{sub {pi}} and magnetic {beta}{sub {pi}} polarizabilities of {pi}{sup +} and {pi}{sup 0} mesons are calculated using the confined quark model. Diagrams with intermediate vector ({rho},{omega}), axial-vector ({ital a}{sub 1}, {ital f}{sub 1}), and scalar ({Epsilon}, {ital f}{sub 0}) states are included. It turns out that the intermediate mesons contribute significantly to the pion electric and magnetic polarizabilities. The following values (in units of 10{sup {minus}43} cm{sup 3}) are obtained: {alpha}{sub {pi}{sup +}}=5.8, {beta}{sub {pi}{sup +}}={minus}5.6, {alpha}{sub {pi}{sup 0}}={minus}1.1, and {beta}{sub {pi}{sup 0}}=2.8. The widths of two-particle strong and radiative decays of scalar mesons are calculated. The results are compared with the available experimental data and the results of other approaches.

• OSTI ID: 5354744
• Journal Information: Soviet Journal of Nuclear Physics (English Translation); (USA), Journal Name: Soviet Journal of Nuclear Physics (English Translation); (USA) Vol. 49:5; ISSN 0038-5506; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COMPOSITE MODELS
DECAY
DIAGRAMS
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
FEYNMAN DIAGRAM
HADRONIC PARTICLE DECAY
HADRONS
MATHEMATICAL MODELS
MESONS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE WIDTHS
PHYSICAL PROPERTIES
PIONS
POLARIZABILITY
PSEUDOSCALAR MESONS
QUARK MODEL
RADIATIVE DECAY
SCALAR MESONS
VECTOR MESONS