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From current to constituent quarks and the spin of the proton

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Zeitschrift für Physik C Particles and Fields

Abstract

We show in the context of an effective Lagrangian for baryons and pseudoscalar mesons how derivative couplings to Goldstone bosons modify the axial charges. Applying these considerations to constituent quarks we relate a modification of their axialU(1) charges to their internal structure which is represented here in term of a flavour singletφ 0 field attached to quarks. We end up with aSU (6)-type constituent quark model which describes the experimental results very well.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-6900, Heidelberg, Germany

    Ulrich Ellwanger & Berthold Stech

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  1. Ulrich Ellwanger
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  2. Berthold Stech
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Ellwanger, U., Stech, B. From current to constituent quarks and the spin of the proton. Z. Phys. C - Particles and Fields 49, 683–689 (1991). https://doi.org/10.1007/BF01483585

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  • DOI: https://doi.org/10.1007/BF01483585

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