Meson Cloud Contribution to Nucleon Structure in a Semi-Relativistic Constituent Quark Model
Abstract
The quark pair creation operator added to a conventional confined-quark Hamiltonian generates an extended Fock space wavefunction for a nucleon including meson clouds. In the harmonic oscillator basis, we consider the 1/2^+ baryons as mixed states of the three low lying SU multiplets truncated at the sd ( n=0,2 ) shell. We study the meson cloud contribution to the electromagnetic structure of nucleon as well as to the decay properties of the resonances. The magnetic moment, charge raduis, charge density and electromagnetic form factor of nucleon will be investigated. Study of the decay spectrum without using perturbation theory is expected to explain the widths and branching ratios of selected decay modes.
- Publication:
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APS April Meeting Abstracts
- Pub Date:
- April 1997
- Bibcode:
- 1997APS..APR..B910C