Meson form factors
Pion has two GFFs which are defined as18,20,59,60,61
$$ \left\langle {\pi }^{a}({p}^{{\prime} })\left\vert {\hat{T}}^{\mu \nu }\right\vert {\pi }^{b}(p)\right\rangle \\ \;\;=\frac{{\delta }^{ab}}{2}\left[{A}^{\pi }(t){P}^{\mu…
Pion has two GFFs which are defined as18,20,59,60,61
$$ \left\langle {\pi }^{a}({p}^{{\prime} })\left\vert {\hat{T}}^{\mu \nu }\right\vert {\pi }^{b}(p)\right\rangle \\ \;\;=\frac{{\delta }^{ab}}{2}\left[{A}^{\pi }(t){P}^{\mu…