CiltElectron Efficiency Measurements with the ATLAS Detector Using 2012 LHC Proton-proton Collision DataHannah Arnold, Christopher Betancourt, Michael Böhler, Renaud Bruneliere, Felix Bührer, Carsten D. Burgard, Daniel Büscher, Fabio Cardillo, Elias Coniavitis, Valerio Consorti, Phuong Nguyen Dang, Valerio Dao, Andrea Di Simone, Giulia Gonella, Gregor Herten, Minoru Hirose, Karl Jakobs, Tomáš Javůrek, Martina Javůrková, Peter Jenni, Florian Kiss, Karsten Köneke, Anna Kopp, Susanne Kühn, Ulrich Landgraf, Christian Lüdtke, Philipp Mogg, Armin Michael Nagel, Ulrich Parzefall, Manfredi Ronzani, Kilian Rosbach, Frederik Rühr, Zuzana Rúriková, Dirk Sammel, Christian Schillo, Ulrike Schnoor, Markus Schumacher, Philip Sommer, Jan Erik Sundermann, Duc Bao Ta, Kim Temming, Peter Tornambè, Vakhtang Tsiskaridze, Christian Weiser, Lei Zhang, Stephanie Zimmermann, ATLAS Collaboration CERN