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

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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

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Title: 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):
Aad, G.;
Abajyan, T.;
Abbott, B.;
Abdallah, J.;
Abdel Khalek, S.;
Abdinov, O.;
Aben, R.;
Izen, Joseph M.;
Lou, Xinchou;
Reeves, Kendall;
Leyton, Michael;
Namasivayam, Harisankar;
ATLAS Collaboration
Date Created: 2014-07-10
Format: Text
Item Type: Article
Keywords: Z bosons
Dark matter (Astronomy)
Proton-proton interactions
Standard model (Nuclear physics)
Abstract: A search is presented for production of dark-matter particles recoiling against a leptonically decaying Z boson in 20.3 fb⁻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.
Publisher: American Physical Society
ISSN: 1550-2368
Source: Physical Review D - Particles, Fields, Gravitation and Cosmology
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevD.90.012004
Persistent Link: http://hdl.handle.net/10735.1/4121
Bibliographic Citation: Aad, G., T. Abajyan, B. Abbott, J. Abdallah, et al. 2014. "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." Physical Review D - Particles, Fields, Gravitation and Cosmology 90(1), doi10.1103/PhysRevD.90.012004
Terms of Use: CC BY 3.0 (Attribution)
©2014 CERN for the ATLAS Collaboration

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CC BY 3.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 3.0 (Attribution)