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

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

1996-06-25

arxiv.org/abs/hep-ph/9606432v2

Phys.Lett. B387 (1996) 9-13

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, RevTex, no figures, a minor error corrected, to appear in PLB

Scientific paper

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

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