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arXiv · 1911.11213

$Δ(1232)$ Contribution in the $π$-photoproduction on Nucleons in Covariant Chiral Perturbation Theory

Gustavo H. Guerrero Navarro
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Abstract

We study the effects of the $Δ$(1232) resonance as an effective degree of freedom for charged and neutral pion photo-production on nucleons. Different observables have been calculated for these processes by using relativistic chiral perturbation theory up to $\mathcal{O}(p^3)$ in the $ δ$ counting, thus, including pion loops. We compare our model with a large database containing the available experimental data and constrain some unknown low energy constants.

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Gustavo H. Guerrero Navarro. 2019-11-25. $Δ(1232)$ Contribution in the $π$-photoproduction on Nucleons in Covariant Chiral Perturbation Theory. https://arxiv.org/abs/1911.11213

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