Huth, JohnJeanty, LKagan, MLopez Mateos, DavidMercurio, KevinMorii, MasahiroSkottowe, Hugh PhilipZevi Della Porta, G2017-07-202013ATLAS Collaboration. 2013. “Improved Luminosity Determination in pp Collisions at √s = 7 TeV Using the ATLAS Detector at the LHC.” The European Physical Journal C 73 (8) (August). doi:10.1140/epjc/s10052-013-2518-3.1434-6044http://nrs.harvard.edu/urn-3:HUL.InstRepos:33470155The luminosity calibration for the ATLAS detector at the LHC during pp collisions at √s=7 TeV in 2010 and 2011 is presented. Evaluation of the luminosity scale is performed using several luminosity-sensitive detectors, and comparisons are made of the long-term stability and accuracy of this calibration applied to the pp collisions at √s=7 TeV. A luminosity uncertainty of Delta L/L = +/- 3.5% is obtained for the 47 pb-1 of data delivered to ATLAS in 2010, and an uncertainty of Delta L/L = +/- 1.8% is obtained for the 5.5 fb-1 delivered in 2011.en-USJournal Article2017-07-2010.1140/epjc/s10052-013-2518-3