Search for new phenomena in events with a photon and missing transverse momentum in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

Abstract

Results 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 such events 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.

14 pages plus author list + cover pages (28 pages total), 19 figures, 1 table, submitted to Physical Review D, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-06. Fig 13 has been replaced and submitted as an Erratum: http://dx.doi.org/10.1103/PhysRevD.92.059903

References in corpus (21)

• PYTHIA 6.4 Physics and Manual
• Parton distributions for the LHC
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Dark Matter Results from 225 Live Days of XENON100 Data
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
• Constraints on Dark Matter from Colliders
• Results from a Low-Energy Analysis of the CDMS II Germanium Data
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• First dark matter search results from a 4-kg CF${}_3$I bubble chamber operated in a deep underground site
• Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using $\sqrt{s}=8$ TeV proton--proton collision data
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
• Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy
• Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Search for Large Extra Dimensions via Single Photon plus Missing Energy Final States at sqrt(s) = 1.96 TeV

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