Complex-mass definition and the structure of unstable particle's propagator
High Energy Physics - Phenomenology
2015-12-04 v3
Abstract
The propagators of unstable particles are considered in the framework of the convolution representation. Spectral function was found for a special case when the propagator of scalar unstable particle has Breight-Wigner form. The expressions for the dressed propagators of unstable vector and spinor fields are derived in an analytical way for this case. We got the propagators in modified Breit-Wigner forms which correspond to the complex-mass definition.
Keywords
Cite
@article{arxiv.1509.08686,
title = {Complex-mass definition and the structure of unstable particle's propagator},
author = {Vladimir Kuksa},
journal= {arXiv preprint arXiv:1509.08686},
year = {2015}
}
Comments
14 pages, the main results were presented at workshop QFTHEP 2015