Since the current uncertainty on the structure of the proton affects the new physics discovery potential of LHC, the ATLAS collaboration is investigating methods to constrain this uncertainty over the whole LHC kinematic regime. The Standard Model processes such as direct \gamma , Z, W and inclusive jet productions are optimal candidates for this purpose.

PACS numbers: 13.85.--t, 14.20.Dh, 12.38.--t, 12.15.--y