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Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at root s=8 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2894
2014 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 90, no 1, 012004- p.Article in journal (Refereed) Published
Abstract [en]

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 root 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.

Place, publisher, year, edition, pages
2014. Vol. 90, no 1, 012004- p.
Keyword [en]
Constraints, LHC
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-149304DOI: 10.1103/PhysRevD.90.012004ISI: 000339169600002Scopus ID: 2-s2.0-84904290196OAI: oai:DiVA.org:kth-149304DiVA: diva2:738906
Funder
EU, European Research Council
Note

QC 20140819

Available from: 2014-08-19 Created: 2014-08-19 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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Kuwertz, EmmaLund-Jensen, BengtMorley, AnthonyStrandberg, Jonas
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CiteExportLink to record
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  • apa
  • harvard1
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  • de-DE
  • en-GB
  • en-US
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  • nn-NB
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  • Other locale
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Output format
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