scholarly journals Light meson mass spectra and pion electromagnetic form factor as a bound system in 3 + 1 dimensional QCD

2018 ◽  
Vol 10 ◽  
pp. 865-881
Author(s):  
Teruo Kurai
Keyword(s):  
Form Factor ◽  
Electromagnetic Form Factor ◽  
Mass Spectra ◽  
Light Meson ◽  
Meson Mass ◽  
Pion Electromagnetic Form Factor ◽  
Pion Electromagnetic Form

scholarly journals The most correct ρ0(770) meson mass and width values

2019 ◽  
Vol 199 ◽  
pp. 02023
Author(s):  
Erik Bartoš ◽  
Stanislav Dubnička ◽  
Anna Z. Dubničková ◽  
Robert Kamiński ◽  
Andrej Liptaj
Keyword(s):  
Form Factor ◽  
Phase Shift ◽  
First Principles ◽  
Electromagnetic Form Factor ◽  
P Wave ◽  
Meson Mass ◽  
Accurate Data ◽  
Pion Electromagnetic Form Factor ◽  
Scattering Phase ◽  
Pion Electromagnetic Form

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.

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