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

, The ATLAS collaboration (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, 90. ISSN 1550-7998

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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−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.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
Additional Information:
© 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.
ID Code:
70565
Deposited By:
Deposited On:
28 Aug 2014 08:57
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Dec 2020 02:07