Lepton Number Violation from Colored States at the LHC

Abstract

The possibility to search for lepton number violating signals at the Large Hadron Collider (LHC) in the colored seesaw scenario is investigated. In this context the fields that generate neutrino masses at the one-loop level are scalar and Majorana fermionic color-octets of SU(3). Due to the QCD strong interaction these states may be produced at the LHC with a favorable rate. We study the production mechanisms and decays relevant to search for lepton number violation signals in the channels with same-sign dileptons. In the simplest case when the two fermionic color-octets are degenerate in mass, one could use their decays to distinguish between the neutrino spectra. We find that for fermionic octets with mass up to about 1 TeV the number of same-sign dilepton events is larger than the standard model background indicating a promising signal for new physics.

minor corrections, added references

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Cited by in corpus (15)

• Neutrinos and Collider Physics
• Lepton number violation at the LHC with leptoquark and diquark
• LHC Phenomenology of Type II Seesaw: Nondegenerate Case
• Interpretation of 750 GeV Diphoton Excess at LHC in Singlet Extension of Color-octet Neutrino Mass Model
• Color-Octet-Electroweak-Doublet Scalars and the CDF Dijet Anomaly
• New Paradigm for Baryon and Lepton Number Violation
• Unification of Gauge Couplings in Radiative Neutrino Mass Models
• Lepton Number and Lepton Flavor Violation through Color Octet States
• Ma-xion: Majoron as QCD axion in a radiative seesaw model
• Phenomenology in Minimal Cascade Seesaw for Neutrino Mass
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• New Solution for Neutrino Masses and Leptogenesis in Adjoint SU(5)
• Four lepton flavor violating signals at the LHC
• Charged Lepton Flavor-violating Transitions in Color Octet Model
• Exotic coloured fermions and lepton number violation at the LHC