Determination of the masses and decay widths of the scalar-isoscalar and vector-isovector mesons below $2$ GeV

Abstract

This study revisits the issue of the extraction of estimates for the masses and for the partial decay widths to two pions of the scalar-isoscalar $I^G(J^{PC})=0^{+}(0^{++})$ and vector-isovector $I^G(J^{PC})=1^{+}(1^{--})$ mesons below $2$ GeV, from the data contained in the recent compilation by the Particle Data Group.

Comments: Final version: 49 pages, fourteen figures, fourteen tables. Differences to the first version: changes to the text to improve readability, and to rid the manuscript of redundant sentences and of sentences which could be prone to misinterpretation/misunderstanding. No changes in any of the numbers and figures