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arXiv · 1403.2244

Pion scalar form factor and model independent values of $f_0(500)$ and $f_0(980)$ meson parameters

S. Dubnicka·A. Z. Dubnickova·A. Liptaj
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Abstract

The pion scalar form factor along with all existing S-wave iso-scalar $ππ$-scattering phase shift data in the elastic region up to $1 {\rm GeV}^2$ are applied for a determination of the $f_0(500)$ and $f_0(980)$ meson parameters $m_{f_0(500)}=(360\pm33){\rm MeV}$, $Γ_{f_0(500)}=(587\pm 85){\rm MeV}$ and $m_{f_0(980)}=(957\pm77) {\rm MeV}$, $Γ_{f_0(980)}=(164\pm142){\rm MeV}$ in a model independent way.

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S. Dubnicka, A. Z. Dubnickova, A. Liptaj. 2014-03-10. Pion scalar form factor and model independent values of $f_0(500)$ and $f_0(980)$ meson parameters. https://doi.org/10.1103/physrevd.90.114003

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