| Issue |
EPJ Web Conf.
Volume 212, 2019
The 12th International Workshop on e+e- Collisions from Phi to Psi (PhiPsi 2019)
|
|
|---|---|---|
| Article Number | 03003 | |
| Number of page(s) | 6 | |
| Section | Mesons of Light Quarks | |
| DOI | https://doi.org/10.1051/epjconf/201921203003 | |
| Published online | 17 June 2019 | |
https://doi.org/10.1051/epjconf/201921203003
Dispersive analysis of the κ/K0*(700) meson and other light strange resonances
1
Departamento de Física Teórica and IPARCOS. Universidad Complutense, 28040, Madrid, Spain
2
Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
* e-mail: jrpelaez@ucm.es
** e-mail: arodas@ucm.es
*** e-mail: elvira@itp.unibe.ch
Published online: 17 June 2019
We briefly review our recent works where we use dispersion relations to constrain fits to data on πK → πK and 
providing a simple but consistent description of these processes. Then, simple analytic methods allow to extract parameters of poles associated to light strange resonances without assuming a particular model. We also present preliminary results on a model-independent determination of the controversial κ or 
resonance parameters, by using those constrained parameterizations as input for partial-wave hyperbolic dispersion relations that allow to perform a rigorous analytic continuation to determine its associated pole.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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