A resummation formalism for resonant transition amplitudes

por Joannis Papavassiliou (Dept. de Fisica Teorica, Valencia)

jueves 9 dic. 1999 11:30 → 12:30 Europe/Madrid

Sala Seminarios (Dpto. de Fisica Teorica (UVEG))

The consistent description of unstable particles within the framework of perturbative gauge field theories necessitates the definition and resummation of off-shell Green's functions, which must respect several crucial physical requirements. We present a solution to this problem at one-loop, using arguments of gauge-invariance, analyticity, unitarity, and renormalisability.