Consequence of the Wigner rotation: perturbative QCD analysis of the pion form factor
Consequence of the Wigner rotation: perturbative QCD analysis of the pion form factor
We analyse the perturbative contributions from the higher helicity ($λ_{1}+λ_{1}=\pm 1$) components, which should be naturally contained in the light-cone wave function for the pion as a consequence of the Wigner rotation, in the QCD calculation of the pion form factor. It is pointed out that the contributions may provide …