Pion light-front wave function, parton distribution and the   electromagnetic form factor
  We derive the lowest-order $q\bar q$ valence light-front wave function for the pion with Lz=0 and |Lz|=1, which reproduces its valence parton distribution and the electromagnetic form factor consistent with data. 
Thomas Gutsche, Valery E. Lyubovitskij, Ivan Schmidt, Alfredo Vega
hep-ph