Direct searches of Type III seesaw triplet fermions at high energy $e^{+}{e}^{-}$ collider

Abstract

The signatures of heavy fermionic triplets ($\Sigma$) arising in scenarios like Type III seesaw model are probed through their direct production and subsequent decay at high energy electron-positron collider. Unlike the case of LHC, the production process has strong dependence on the mixing parameter ($V_{e,\mu }$), making the leptonic collider unique to probe such mixing. We have established that with suitably chosen kinematic cuts, a 1 TeV $e^{+}{e}^{-}$ collider could probe the presence of $\Sigma$ of mass in the range of 500 GeV having $V_e=0.05$ with a few inverse femto barn luminosity through single production. The cross section is found to be not sufficient to probe the case of triplet-muon mixing through single triplet production. On the other hand, the pair production considered at 2 TeV centre of mass energy is capable of probing both the mixing scenarios efficiently. Studying the mass reach, presence of charged fermionic triplets upto a mass of about 980 GeV could be established at $3\sigma$ level through single production at a 1 TeV $e^{+}{e}^{-}$ collider with moderate luminosity of 100 fb${}^{-1}$, assuming $V_e=0.05$ . The pair production case requires larger luminosity, as the cross section is smaller in this case. With an integrated luminosity of 300 fb${}^{-1}$, the mass reach in this case is close to 1 TeV with triplet-muon mixing, while it is slightly lower at about 950 GeV in the case of $V_{\mu }=0.05$.

26 pages, 5 Figures

References in corpus (10)

• 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
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Distinguishing seesaw models at LHC with multi-lepton signals
• Low energy effects of neutrino masses
• Effects of new leptons in Electroweak Precision Data
• Type-III see-saw at LHC
• Probing seesaw at LHC
• Radiative Type III Seesaw Model and its collider phenomenology
• Polarisation and Beam Energy Measurement at a Linear $e^{+}{e}^{-}$ Collider

Cited by in corpus (12)

• Search for physics beyond the standard model in multilepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Bounds on the triplet fermions in type-III seesaw and implications for collider searches
• Testing triplet fermions at the electron-positron and electron-proton colliders using fat jet signatures
• Constraining minimal Type-III Seesaw Model from naturalness, Lepton Flavor Violation and Electroweak Vacuum stability
• Type-III see-saw: Search for triplet fermions in final states with multiple leptons and fat-jets at 13 TeV LHC
• Type-III Seesaw: Phenomenological Implications of the Information Lost in Decoupling from High-Energy to Low-Energy
• Displaced Higgs production in Type-III Seesaw at the LHC/FCC, MATHUSLA and Muon collider
• Testing electroweak scale seesaw models at $e^{-}\gamma$ and $\gamma \gamma$ colliders
• The Two Scales of New Physics in Higgs Couplings
• Investigating New Physics Models with Signature of Same-Sign Diboson + ${E/}_T$
• Probing heavy triplet leptons of the type-III seesaw mechanism at future muon colliders
• H Marks the Spot: Searching for Exotic Production of Higgs + X to Map Out New Physics