Parton Model in Lorentz Invariant Non-Commutative Space
  We consider the Lorentz invariant non-commutative QED and complete the Feynman rules for the theory up to the order $\theta^2$. In the Lorentz invariant version of the non-commutative QED the particles with fractional charges can be also considered. We show that in the parton model, even at the lowest order, the Bjorken scaling violates as $\sim\theta^2Q^4$. 
M. Haghighat, M. M. Ettefaghi