Hard scattering amplitude for the higher helicity components of the pion form factor
Hard scattering amplitude for the higher helicity components of the pion form factor
For obtaining the spin space wave function of the pion meson in the light-cone formalism from the naive quark model, it is necessary to take into account the Wigner rotation. Consequently there are higher helicity $({\ensuremath{\lambda}}_{1}+{\ensuremath{\lambda}}_{2}=\ifmmode\pm\else\textpm\fi{}1)$ components in the light-cone spin space wave function of pion in addition to the …