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Search for dark matter particles in proton-proton collisions at √s=8 TeV using the razor variables

CMS Collaboration; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, M.; ... mehr

Abstract (englisch):
A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 fb−1, at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90% confidence level for a mediator mass scale Λ below 1 TeV. The use of razor variables yields results that complement those previously published.

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Volltext §
DOI: 10.5445/IR/1000064977
Originalveröffentlichung
DOI: 10.1007/JHEP12(2016)088
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Seitenaufrufe: 7
seit 28.07.2018
Downloads: 45
seit 27.03.2017
Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 1029-8479, 1126-6708
urn:nbn:de:swb:90-649772
KITopen-ID: 1000064977
Erschienen in Journal of high energy physics
Band 2016
Heft 12
Seiten 88
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagworte Hadron-Hadron scattering (experiments); Supersymmetry
Nachgewiesen in Scopus
Web of Science
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