Baryon Decuplet to Octet Electromagnetic Transitions in Quenched and Partially Quenched Chiral Perturbation Theory

Abstract

We calculate baryon decuplet to octet electromagnetic transition form factors in quenched and partially quenched chiral perturbation theory. We work in the isospin limit of SU(3) flavor, up to next-to-leading order in the chiral expansion, and to leading order in the heavy baryon expansion. Our results are necessary for proper extrapolation of lattice calculations of these transitions. We also derive expressions for the case of SU(2) flavor away from the isospin limit.

arXiv comment16 pages, 3 figures, revtex4

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• A model for the Delta(1600) resonance and gamma N -> Delta(1600) transition
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• A covariant model for the decuplet to octet Dalitz decays
• Hadronic Electromagnetic Properties at Finite Lattice Spacing
• Chiral Lagrangians with decuplet baryons to one loop
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• Light-Front Dynamics and Generalized Parton Distributions