Higher twists and maxima for DIS on nuclei in high density QCD region
  We show that the ratio of different structure functions have a maximum which depends on $x_B$ and $A$. We argue that these maxima are proportional to the saturation scale. The analysis of leading and higher twist contributions for different observables is given with the aim of determining the kinematic region where high parton density effects could be seen experimentally. 
E. Gotsman (Tel Aviv U.),E. Levin (Tel Aviv U./BNL),U. Maor (Tel Aviv   U.) L.McLerran(BNL) and K.Tuchin(Tel Aviv U.)