Published 1989 | Version v1
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Electromagnetic moments of hadrons and quarks in a hybrid model

Creators

Description

Magnetic moments of baryons are analyzed on the basis of general sum rules following from the theory of broken symmetries and quark models including the relativistic effects and hadronic corrections due to the meson exchange currents. A new sum rule is proposed for the hyperon magnetic moments, which is in accord with the most precise new data and also with a theory of the electromagnetic ΛΣ0 mixing. The numerical values of the quark electromagnetic moments are obtained within a hybrid model treating the pion cloud effects through the local coupling of the pion field with the constituent massive quarks. Possible sensitivity of the weak neutral current magnetic moments to violation of the Okubo-Zweig-Izuki rule is emphasized nand discussed. 39 refs.; 1 fig

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MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
16 p.
Report number
JINR-E--2-89-837

INIS

Country of Publication
USSR
Country of Input or Organization
USSR
INIS RN
22074956
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BARYONS; CORRECTIONS; LAMBDA PARTICLES; MAGNETIC MOMENTS; PIONS; QUARK MODEL; QUARK-HADRON INTERACTIONS; QUARKS; RADIATIVE DECAY; SIGMA PARTICLES; STRUCTURE FUNCTIONS; SU-3 GROUPS; WEAK NEUTRAL CURRENTS; XI PARTICLES
Descriptors DEC
ALGEBRAIC CURRENTS; BOSONS; COMPOSITE MODELS; CURRENTS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FUNCTIONS; HADRONS; HYPERONS; INTERACTIONS; LAMBDA BARYONS; LIE GROUPS; MATHEMATICAL MODELS; MESONS; NEUTRAL CURRENTS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; SIGMA BARYONS; STRANGE PARTICLES; SU GROUPS; SYMMETRY GROUPS; XI BARYONS

Optional Information

Notes
Submitted to 14 Intern. Symp. on Lepton and Photon Interactions, Stanford, 1989.