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arXiv · hep-ph/9606432

Redundance of $Δ$-isobar Parameters in Effective Field Theories

Hua-Bin Tang·Paul J. Ellis
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Abstract

It is shown that the off-shell parameters in the interaction Lagrangian of pions, nucleons, and $Δ$-isobars are redundant in the framework of effective field theories. Our results also suggest the necessity of including the $Δ$ as an explicit dynamical degree of freedom.

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Hua-Bin Tang, Paul J. Ellis. 1996-09-03. Redundance of $Δ$-isobar Parameters in Effective Field Theories. https://doi.org/10.1016/0370-2693(96)00862-3

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