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arXiv · 1608.00517

The width of the $Δ$-resonance at two loop order in baryon chiral perturbation theory

Jambul Gegelia·Ulf-G. Meißner·Dmitrij Siemens·De-Liang Yao
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Abstract

We calculate the width of the delta resonance at leading two-loop order in baryon chiral perturbation theory. This gives a correlation between the leading pion-nucleon-delta and pion-delta couplings, which is relevant for the analysis of pion-nucleon scattering and other processes.

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Jambul Gegelia, Ulf-G. Meißner, Dmitrij Siemens, De-Liang Yao. 2016-08-01. The width of the $Δ$-resonance at two loop order in baryon chiral perturbation theory. https://doi.org/10.1016/j.physletb.2016.10.017

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