A Collective Model of Baryons: Masses and Electromagnetic Couplings

Amiram Leviatan, R. Bijker

Research output: Contribution to journalConference articlepeer-review


We introduce a collective model of baryons which are interpreted as rotations and vibrations of an oblate-top shaped string. The underlying algebraic structure provides a tractable computational framework for comparing single-particle and collective forms of dynamics. We derive mass formulas as well as closed expressions for both elastic and transition form factors, and consequently for the helicity amplitudes that can be measured in electro- and photoproduction. Effects of spin-flavor symmetry breaking and of swelling of hadrons with increasing excitation energy are considered.
Original languageAmerican English
Pages (from-to)142-144
Number of pages3
JournalPiN Newsletter
StatePublished - 1995

Bibliographical note

Contribution to: 6th International Symposium on Meson - Nucleon Physics and Structure of the Nucleon, Blauberen/Tübingen, Germany, July 10-14, 1995. Edited by D. Drechsel, G. Höhler, W. Kluge and B.M.K. Nefkens.


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