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

Abstract

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 inverse femtobarns, 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 Lambda below 1 TeV. The use of razor variables yields results that complement those previously published.

Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-14-004/index.html

References in corpus (30)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• A direct empirical proof of the existence of dark matter
• Implications of CTEQ global analysis for collider observables
• Constraints on Dark Matter from Colliders
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• The PDF4LHC Working Group Interim Recommendations
• The Tevatron at the Frontier of Dark Matter Direct Detection
• First dark matter search results from a 4-kg CF${}_3$I bubble chamber operated in a deep underground site
• Maverick dark matter at colliders
• The PDF4LHC Working Group Interim Report
• Dark Matter Search Results from the PICO-2L C${}_3$F${}_8$ Bubble Chamber
• Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
• Update of Parton Distributions at NNLO
• Performance of the CMS missing transverse energy reconstruction in pp data at sqrt(s) = 8 TeV
• On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC Part III: Analysis for the $t$-channel
• Flavored Dark Matter and the Galactic Center Gamma-Ray Excess
• Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Study of ${\chi }_{cJ}$ decaying into $\varphi$ $K^{\ast }(892)$ $\bar{K}$
• Search for dark matter in events with heavy quarks and missing transverse momentum in $pp$ collisions with the ATLAS detector
• Search for new particles in events with one lepton and missing transverse momentum in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at sqrt(s) = 8 TeV
• Matching Parton Showers and Matrix Elements
• Kinematical variables towards new dynamics at the LHC
• Search for Dark Matter in Events with Missing Transverse Momentum and a Higgs Boson Decaying to Two Photons in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector
• Search for monotop signatures in proton-proton collisions at sqrt(s) = 8 TeV
• Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at sqrt(s) = 8 TeV
• Search for supersymmetry with razor variables in pp collisions at sqrt(s) = 7 TeV

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