Search for dark matter in proton-proton collisions at 8 TeV with missing transverse momentum and vector boson tagged jets
Name
Khachatryan2016_Article_SearchForDarkMatterInProton-pr.pdf
Description
Published version
Size
2.2 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Date Issued
December 2016
Journal
Journal of High Energy Physics
Publisher
Springer Nature America, Inc
Citation
Khachatryan, V. et al. "Search for dark matter in proton-proton collisions at 8 TeV with missing transverse momentum and vector boson tagged jets." Journal of High Energy Physics 2016, 83 (December 2016) © The Author(s)
Version
Final published version
Abstract
A search is presented for an excess of events with large missing transverse momentum in association with at least one highly energetic jet, in a data sample of proton-proton collisions at a centre-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of 19.7 fb⁻¹ collected by the CMS experiment at the LHC. The results are interpreted using a set of simplified models for the production of dark matter via a scalar, pseudoscalar, vector, or axial vector mediator. Additional sensitivity is achieved by tagging events consistent with the jets originating from a hadronically decaying vector boson. This search uses jet substructure techniques to identify hadronically decaying vector bosons in both Lorentz-boosted and resolved scenarios. This analysis yields improvements of 80% in terms of excluded signal cross sections with respect to the previous CMS analysis using the same data set. No significant excess with respect to the standard model expectation is observed and limits are placed on the parameter space of the simplified models. Mediator masses between 80 and 400 GeV in the scalar and pseudoscalar models, and up to 1.5 TeV in the vector and axial vector models, are excluded.[Figure not available: see fulltext.] Keywords: Dark matter; Hadron-Hadron scattering (experiments)
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP12(2016)083
