EPJ Web of Conferences
Volume 37, 2012MESON 2012 – 12th International Workshop on Production, Properties and Interaction of MESONS
|Number of page(s)||4|
|Section||Other topics - parallel talks|
|Published online||06 December 2012|
Precise determination of the parameters of resonances f0(500) and f0(980) by fitting the data and dispersion relations
1 Institute of Nuclear Physics PAN, Kraków, Poland
2 Universidad Complutense de Madrid, Spain
a e-mail: email@example.com
The long-standing puzzle in the parameters of the f0(500), as well as the f0(980), is finally being settled  thanks to precise dispersive analyses carried out during the last years. Here we report on our very recent dispersive data analysis which allowed for a precise and model independent determination of the amplitudes for the S, P, D and F waves [2–4]. The analytic continuation of once subtracted dispersion relations for the S0 wave to the complex energy plane leads to very precise results for the f0(500) pole: √spole = 457-13+14 - i279-7+11 MeV and for the f0(980) pole: √spole = 996 ± 7 - i25-6+10 MeV.
© Owned by the authors, published by EDP Sciences, 2012
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.