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Pentaquark Masses in Chiral Perturbation Theory

Vivek Mohta
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Abstract

Heavy baryon chiral perturbation theory for pentaquarks is applied beyond leading order. The mass splitting in the pentaquark anti-decuplet is calculated up to NNLO. An expansion in the coupling of pentaquarks to non-exotic baryons simplifies calculations and makes the pentaquark masses insensitive to the pentaquark-nucleon mass difference. The possibility of determining coupling constants in the chiral Lagrangian on the lattice is discussed. Both positive and negative parities are considered.

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Vivek Mohta. 2004-08-05. Pentaquark Masses in Chiral Perturbation Theory. https://doi.org/10.1103/physrevd.70.114022

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