TY  - JOUR
AU  - Guerrero Navarro, G. H.
AU  - Vicente Vacas, M. J.
PY  - 2020
DA  - 2020//
TI  - Threshold pion electro- and photoproduction off nucleons in covariant chiral perturbation theory
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 113016
EP  - 23pp
VL  - 102
IS  - 11
PB  - Amer Physical Soc
AB  - Pion electro- and photoproduction off the nucleon close to threshold is studied in covariant baryon chiral perturbation theory at O(p(3)) in the extended-on-mass-shell scheme, with the explicit inclusion of the Delta(1232) resonance. The relevant low energy constants are fixed by fitting the available experimental data with the theoretical model. The inclusion of the Delta resonance as an explicit degree of freedom substantially improves the agreement with data and the convergence of the model.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2008.04244
UR  - https://doi.org/10.1103/PhysRevD.102.113016
DO  - 10.1103/PhysRevD.102.113016
LA  - English
N1  - WOS:000603547000001
ID  - GuerreroNavarro+VicenteVacas2020
ER  -