Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at root s=8 TeV with the ATLAS detector

6 High Energy Physics Division, Argonne National Laboratory, Argonne, IL, United States of America 7 Department of Physics, University of Arizona, Tucson, AZ, United States of

78 Department of Physics and Astronomy, University College London, London, United Kingdom. 79 Louisiana Tech University, Ruston

87 The University of Michigan, Department of Physics, 2477 Randall Laboratory, 500 East University, Ann Arbor, MI 48109-1120, United States 88 Michigan State University, Department

35 (a) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; (b) Department of Modern Physics, University of Science and Technology of China, Anhui; (c) Department

64 Department of Physics and Astronomy, Iowa State University, Ames IA, United States of America. 65 Joint Institute for Nuclear Research, JINR Dubna,

Observed upper limits at 95% CL on the signal cross section (left) and corresponding exclusion contours (right) in gluino-squark mass space for the single-photon search in the

In order to derive limits on new physics, the expected number of signal events for the event selections are estimated using simulated signal samples, taking into account uncer-

35 ( a ) Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; ( b ) Department of Modern Physics, University of Science and Technology of China, Anhui; ( c