The most correct ρ0(770) meson mass and width values
1 Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovak Republic
2 Department of Theoretical Physics, Comenius University, Mlynská dolina F1, 842 48 Bratislava, Slovak Republic
3 Henryk Niewodniczaňski Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
* e-mail: email@example.com
Published online: 1 February 2019
By application of the pion electromagnetic form factor and also the P-wave isovector ππ scattering phase shift parametrizations, following from the first principles, like unitarity and analyticity, for a description of the corresponding accurate data, it is clearly demonstrated that the ρ0(770) meson mass and width values obtained by the Gounaris-Sakurai model in a description of the same data can not be accepted as correct ones.
© 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, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.