Aad, G.Abbott, B.Abdallah, J.Abdel Khalek, S.Abdinov, O.Aben, R.Abi, B.Haleem, M.Izen, Joseph M.Leyton, MichaelMeirose, BernhardNamasivayam, HarisankarReeves, KendallATLAS Collaboration2015-03-252015-03-252015-01-272015-01-271550-7998http://hdl.handle.net/10735.1/4363Results of a search for new phenomena in events with an energetic photon and large missing transverse momentum with the ATLAS experiment at the LHC are reported. Data were collected in proton-proton collisions at a center-of-mass energy of 8 TeV and correspond to an integrated luminosity of 20.3 fb⁻¹. The observed data are well described by the expected Standard Model backgrounds. The expected (observed) upper limit on the fiducial cross section for the production of events with a photon and large missing transverse momentum is 6.1 (5.3) fb at 95% confidence level. Exclusion limits are presented on models of new phenomena with large extra spatial dimensions, supersymmetric quarks, and direct pair production of dark-matter candidates.en-USCC BY 3.0 (Attribution)©2015 CERN, for the ATLAS Collaborationhttp://creativecommons.org/licenses/by/3.0/Standard model (Nuclear physics)PhotonsJets (Nuclear physics)Momentum (Physics)Proton-proton interactionsTextAad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, et al. 2015. "Search for new phenomena in events with a photon and missing transverse momentum in pp collisions at √s = 8 TeV with the ATLAS detector." Physical Review D 91(1): doi:10.1103/PhysRevD.91.012008.911