Resonance propagation and threshold singularities

Authors
Lucio, JLM Pestieau, J
Citation
Jlm. Lucio et J. Pestieau, Resonance propagation and threshold singularities, MOD PHY L A, 16(20), 2001, pp. 1315-1320
Citations number
12
Categorie Soggetti
Physics
Journal title
MODERN PHYSICS LETTERS A
ISSN journal
02177323 → ACNP
Volume
16
Issue
20
Year of publication
2001
Pages
1315 - 1320
Database
ISI
SICI code
0217-7323(20010628)16:20<1315:RPATS>2.0.ZU;2-U
Abstract
We consider the problem of propagation in the framework of quantum field th eory in relation to the mass and width definition for an unstable particle. Using unitarity, we show that a renormalization constant free of threshold singularities naturally arises.