Same-Sign Dileptons from Colored Scalars in the Flavorful Top-Coloron Model
arXiv:1306.2248 · doi:10.1103/PhysRevD.88.034006
Abstract
In this paper we study the phenomenology of color-octet and color-singlet scalars in the flavorful Top-Coloron model. We discuss the relevant production mechanisms at hadron colliders and the dominant decay modes, highlighting the most promising signatures for discovery, and derive bounds on the masses of the new scalars from LHC and Tevatron data. Of particular interest is the case in which color-octet scalars are pair produced and each decay to t cbar or tbar c, leading to a same-sign-dilepton final state. LHC data places a lower limit of 440 GeV on the octet mass in this scenario. The case of an octet lighter than the top, where the octet only decays into jets, has been tested by the Tevatron, which excludes the mass region from 50 to 125 GeV. The 8 TeV LHC is not yet sensitive to the observation of the color-singlet states, which are produced at rates much smaller than the octets. Nevertheless, the color-singlet pseudoscalar can be discovered at the 14 TeV LHC by analyzing the channel where it is produced from the decay of a color-octet vector boson.
21 pages. Included scalar decay to off-shell t and c, and added results from ATLAS four-jet resonance search
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Cited by in corpus (12)
- Rare Top Decays as Probes of Flavorful Higgs Bosons
- Distinguishing Di-jet Resonances at the LHC
- LHC constraints on color octet scalars
- Constraints on the Scalar Sector of the Renormalizable Coloron Model
- LHC bounds on coloured scalars
- Single Top Production as a Probe of Heavy Resonances
- Distinguishing Color-Octet and Color-Singlet Resonances at the Large Hadron Collider
- Phenomenology of SU(5) low-energy realizations: the diphoton excess and Higgs flavor violation
- Vacuum Stability and Triviality Analyses of the Renormalizable Coloron Model
- Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at sqrt(s) = 8 TeV
- Top Signatures From Composite Higgs Theories
- Octet scalars shaping LHC distributions in 4-jet final states