Type-III Seesaw fermionic triplets at the International Linear Collider

TL;DR

This paper investigates the potential to detect and analyze Type III fermionic triplets at the International Linear Collider, highlighting the sensitivity of production processes to triplet-electron mixing and exploring different mass and energy scenarios.

Contribution

It provides a detailed analysis of how heavy fermionic triplets can be produced and identified at the ILC, emphasizing the role of mixing sensitivity unlike at the LHC.

Findings

Single production can detect triplets up to 750 GeV at 1 TeV ILC.

Pair production at 2 TeV is effective for studying mixing scenarios.

Production processes are highly sensitive to triplet-electron mixing V_e.

Abstract

The signature of heavy fermionic triplets belonging to Type III seesaw at the International Linear Collider (ILC) is probed. Presence of charged fermionic triplets upto a mass of about $ 750$ GeV could be established through single production at a 1 TeV ILC with moderate luminosity of 300 fb$^{-1}$, assuming a fermion triplet-electron mixing of about 0.05. Unlike the case of LHC, the production process is highly sensitive to the mixing, making the process interesting. The single production of neutral triplet is found to be somewhat harder, considering the large SM background present. Pair production of triplets of mass 500 GeV considered at 2 TeV centre of mass energy presents convenient ways to study different mixing scenarios. The production process is sensitive to $V_e$. The pair production along with information regarding single production would be able to identify the mixing scenarios.