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Search for Dark Matter in Events with a Z Boson and Missing Transverse Momentum in pp Collisions at √s = 8 TeV with the ATLAS Detector

Author(s)
Taylor, Frank E.
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Abstract
A search is presented for production of dark-matter particles recoiling against a leptonically decaying Z boson in 20.3  fb[superscript −1] of pp collisions at √s = 8  TeV with the ATLAS detector at the Large Hadron Collider. Events with large missing transverse momentum and two oppositely charged electrons or muons consistent with the decay of a Z boson are analyzed. No excess above the Standard Model prediction is observed. Limits are set on the mass scale of the contact interaction as a function of the dark-matter particle mass using an effective field theory description of the interaction of dark matter with quarks or with Z bosons. Limits are also set on the coupling and mediator mass of a model in which the interaction is mediated by a scalar particle.
Date issued
2014-07
URI
http://hdl.handle.net/1721.1/91173
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, et al. “Search for Dark Matter in Events with a Z Boson and Missing Transverse Momentum in pp Collisions at √s = 8 TeV with the ATLAS Detector.” Phys. Rev. D 90, no. 1 (July 2014). © 2014 CERN, for the ATLAS Collaboration
Version: Final published version
ISSN
1550-7998
1550-2368

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