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  • PhysRevD.90.012004

    Rights statement: © 2014 CERN, for the ATLAS Collaboration Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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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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Article number012004
<mark>Journal publication date</mark>10/07/2014
<mark>Journal</mark>Physical Review D
Volume90
Number of pages21
Publication StatusPublished
<mark>Original language</mark>English

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.

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© 2014 CERN, for the ATLAS Collaboration Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.