https://doi.org/10.1140/epjc/s10052-017-5478-1
Regular Article - Theoretical Physics
Direct searches of Type-III seesaw triplet fermions at high energy 
collider
Department of Physics, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
* e-mail: g.deepanjali@iitg.ernet.in
Received:
7
August
2017
Accepted:
19
December
2017
Published online:
18
January
2018
The signatures of heavy fermionic isotriplets (
) are probed through their direct production and subsequent decay at high energy electron–positron colliders. Unlike the case of LHC, the production process has strong dependence on the mixing of with electron (
), making the leptonic collider unique to fingerprint the presence of such mixing. We establish that pair production considered at 
TeV can be employed to study both the cases of 
and of 
with 
fb
luminosity, while the single production can probe the latter case with a few inverse femto barn luminosity at 
TeV. Exploring the mass reach, both the single and pair productions are capable of probing of mass close to the kinematic limits through selected channels. Investigating simultaneous limits on the 
parameter space, we identify suitable final states and their 
reach on 
and 
at 300 (100) fb luminosity in the case of pair (single) production.
© The Author(s), 2018
