INVESTIGADORES
MARIANO Alejandro Edgardo
artículos
Título:
''Absorptive one-loop corrections and the complex-mass prescription for the Delta resonance propagator''
Autor/es:
C. BARBERO, G. LOPEZ CASTRO, A. MARIANO
Revista:
JOURNAL OF PHYSICS G. NUCLEAR PHYSICS
Editorial:
IOP Science
Referencias:
Año: 2012 vol. 39 p. 85011 - 85011
ISSN:
0305-4616
Resumen:
It is shown that the absorptive one-loop self-energy corrections to the Delta++ propagator can reproduce the complex-mass prescription for its resonant form. The effects of absorptive corrections beyond the ones considered in the complex-mass (CM) prescription for the propagator turn out to be negligible in the cross section of pion-proton elastic scattering. This result brings support to the CM approximation used in previous calculations to include the baryon in processes involving the production of the pion-nucleon system in the resonance region.
