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  • 1995-1999  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Few body systems 26 (1999), S. 147-173 
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract.  Lower and upper bounds to the electric polarizability and para-magnetic susceptibility are explicitly calculated by means of a sum-rule technique and within a large variety of constituent quark models. The role of three-body forces in the potential model is investigated in detail as well as the effects of SU(6) breaking terms. The quark degrees of freedom give a quite sizeable contribution to the static polarizability and the meson cloud accounts roughly for 30% and 60% of the electric proton and neutron polarizability respectively. The quark contribution to the paramagnetic susceptibility is even higher and the mesonic effects are rather uncertain.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 350 (1995), S. 371-377 
    ISSN: 1434-601X
    Keywords: 12.38.Bx ; 12.40.Aa ; 13.60.Hb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We use a model for baryons that links the constituent structure to the deep inelastic (current) properties. The approach consists in a laboratory partonic description (based on a model of hadron structure), to which a low momentum scaleQ 0 is adscribed, which is evolved to high momenta by means of the renormalization group. A generalization of the model by means of the hadronic quark cluster decomposition, provides a description of the structure functions of nuclei and is the starting point to study the effects that the antisymmetrization at the quark level has on the structure function of a model deuteron. The analysis contains conventional and high momentum partonic components. We next study quark Pauli blocking scenarios by including exotic delta nuclei in our analysis. By assuming that nuclei are composed of quasi-deuteron clusters, i.e., the deuteron parameters are density dependent, we analyze these effects on the structure functions of heavier nuclei.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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