The Color Discriminant Variable and Scalar Diquarks at the LHC
arXiv:1507.06676 · doi:10.1103/PhysRevD.92.075020
Abstract
The LHC is actively searching for narrow dijet resonances corresponding to physics beyond the Standard Model. Among the many resonances that have been postulated (e.g., colored vectors, scalars, and fermions) one that would have a particularly large production rate at the LHC would be a scalar diquark produced in the s-channel via fusion of two valence quarks. In previous work, we introduced a color discriminant variable that distinguishes among various dijet resonances, drawing on measurements of the dijet resonance mass, total decay width and production cross-section. Here, we show that this model-independent method applies well to color-triplet and color-sextet scalar diquarks, distinguishing them clearly from other candidate resonances. We also introduce a more transparent theoretical formulation of the color discriminant variable that highlights its relationship to the branching ratios of the resonance into incoming and outgoing partons and to the properties of those partons. While the original description of the color discriminant variable remains convenient for phenomenological use upon discovery of a new resonance, the new formulation makes it easier to predict the value of the variable for a given class of resonance.
22 pages, 11 pdf figures. One reference added, one updated. arXiv admin note: text overlap with arXiv:1406.2003
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Cited by in corpus (11)
- Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
- Di-higgs enhancement by neutral scalar as probe of new colored sector
- LHC Constraints on Scalar Diquarks
- Electric Dipole Moments from Post-Sphaleron Baryogenesis
- Mono-jet Signatures of Gluphilic Scalar Dark Matter
- Colorphilic Spin-2 Resonances in the LHC Dijet Channel
- Ultraheavy resonances at the LHC: beyond the QCD background
- Identifying the Quantum Properties of Hadronic Resonances using Machine Learning
- Measuring Electroweak Quantum Numbers of Color Sextet Resonances at the LHC
- LHC probes of the 10 TeV scale
- Color Discriminant Variable to Separate Dijet Resonances at the LHC