Propagators of light scalar mesons
High Energy Physics - Phenomenology
2009-11-10 v2 High Energy Physics - Experiment
Nuclear Theory
Abstract
For the first time, as far as we know, in field theory are found explicit forms of propagators satisfying the K\"allen -- Lehmann representation. To be exact, it is shown that scalar meson propagators, taking into account a virtual intermediate state contribution to the resonance self-energy, satisfy the K\"allen -- Lehmann representation in the wide domain of coupling constants of the light scalar mesons with the two-particle states. It is proposed to use these propagators in routine fitting data about light scalar mesons to reveal physics underlying the light scalar mesons.
Keywords
Cite
@article{arxiv.hep-ph/0405128,
title = {Propagators of light scalar mesons},
author = {N. N. Achasov and A. V. Kiselev},
journal= {arXiv preprint arXiv:hep-ph/0405128},
year = {2009}
}
Comments
9 pages