Resonance Propagation and Threshold Singularities

Abstract

We consider the problem of propagation of an unstable particle in the framework of Quantum Field Theory. Using unitarity, we show that a real renormalization constant free of threshold singularities naturally arises.

5 pages, no figures, revtex

References in corpus (2)

• Width and Partial Widths of Unstable Particles
• Higgs-Boson Production and Decay Close to Thresholds