Spectral Decomposition of Missing Transverse Energy at Hadron Colliders

Abstract

We propose a spectral decomposition to systematically extract information of dark matter at hadron colliders. The differential cross section of events with missing transverse energy (MET) can be expressed by a linear combination of basis functions. In the case of $s$-channel mediator models for dark matter particle production, basis functions are identified with the differential cross sections of sub-processes of virtual mediator and visible particle production while the coefficients of basis functions correspond to dark matter invariant mass distribution in the manner of the Källén-Lehmann spectral decomposition. For a given MET data set and mediator model, we show that one can differentiate a certain dark matter-mediator interaction from another through spectral decomposition.

6+4 pages, 6 figures, PRL version

References in corpus (11)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• A Theory of Dark Matter
• Results from a search for dark matter in the complete LUX exposure
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• Narrow-width approximation accuracy
• Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a $Z$ boson in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Search for Dark Matter Produced in Association with a Higgs Boson Decaying to $b\bar{b}$ using 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS Detector
• Search for new physics in the monophoton final state in proton-proton collisions at sqrt(s) = 13 TeV
• Quantum Interference Effects Among Helicities at LEP-II and Tevatron
• Monojet searches for momentum-dependent dark matter interactions