INVESTIGADORES
BARBERO Cesar Alberto
artículos
Título:
Absorptive one-loop corrections and the complex-mass prescription for the Delta resonance propagator
Autor/es:
C. BARBERO; G. LóPEZ CASTRO; A. MARIANO
Revista:
JOURNAL OF PHYSICS G. NUCLEAR PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2012 vol. 39 p. 850111 - 8501110
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 pi+p 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 pi N system in the resonance region.
