Spin-flavor structure of large Nc baryons

Roger F. Dashen, Elizabeth Jenkins, and Aneesh V. Manohar
Phys. Rev. D 51, 3697 – Published 1 April 1995
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Abstract

The spin-flavor structure of large Nc baryons is described in the 1/Nc expansion of QCD using quark operators. The complete set of quark operator identities is obtained, and used to derive an operator reduction rule which simplifies the 1/Nc expansion. The operator reduction rule is applied to the axial vector currents, masses, magnetic moments, and hyperon nonleptonic decay amplitudes in the SU(3) limit, to first order in SU(3) breaking, and without assuming SU(3) symmetry. The connection between the Skyrme and quark operator representations is discussed. An explicit formula is given for the quark model operators in terms of the Skyrme model operators to all orders in 1/Nc for the two flavor case.

  • Received 8 November 1994

DOI:https://doi.org/10.1103/PhysRevD.51.3697

©1995 American Physical Society

Authors & Affiliations

Roger F. Dashen

  • Department of Physics, University of California at San Diego, La Jolla, California 92093

Elizabeth Jenkins and Aneesh V. Manohar

  • Department of Physics, University of California at San Diego, La Jolla, California 92093
  • Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544

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Issue

Vol. 51, Iss. 7 — 1 April 1995

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