Probing first-generation doublet vector-like leptons via single production at the 3 TeV CLIC
Abstract
The single production of first-generation SU(2)L doublet vector-like leptons (VLLs) at the Compact Linear Collider (CLIC) with √s=3 TeV is studied. The neutral and charged VLL states are investigated through e+e-→νeN̅+ν̅eN and e+e-→ e± E∓, respectively. The neutral VLL is searched for in the N→ W∓ e± channel with W±→ jj, leading to the e±+2j+slashedET final state. The charged VLL is explored through E±→ e± h (h→ bb̅) and E±→ e± Z (Z→ qq̅), yielding the e+e-+2b and e+e-+2j signatures. Signal and background simulations include initial-state radiation, beamstrahlung, and detector effects. Cut-based analyses are performed for integrated luminosities of $1$, $3$, and 5 ab−1 to obtain the exclusion and discovery sensitivities in the VLL mass--mixing parameter space. The neutral-VLL channel gives the best sensitivity. At 1 ab−1, the 2σ exclusion reaches ε≃0.013 at MN=1.3 TeV and ε≃0.065 at MN=2.9 TeV, while the 5σ discovery reach corresponds to ε≃0.02--$0.10$. At 5 ab−1, the charged-VLL channels probe masses up to about 2.9 TeV and 2.8 TeV in the e± h and e± Z modes, respectively. These results demonstrate that a 3 TeV CLIC can provide sensitive probes of first-generation doublet VLLs over a wide mass range, including scenarios with small VLL--electron mixing.
Related
- Probing the Single Production of First-Generation Singlet Vector-like Leptons at Future e+e- Colliders
- Prospects for probing neutral vector-like leptons via pair production at a muon collider
- Prospects for probing neutral vector-like leptons via pair production at a muon collider
- Probing the Inert Scalar Sector of the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
- Search for boosted vector boson scattering W±W±H production in final states with same-sign leptons and b-jets in proton-proton collisions at √s=13 TeV with the ATLAS detector
BibTeX
@misc{gao2026probing,
title = {{Probing first-generation doublet vector-like leptons via single production at the 3 TeV CLIC}},
author = {Yin-Hao Gao and Yao-Bei Liu and Stefano Moretti},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.16413},
eprint = {2610.16413},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.16413},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Probing first-generation doublet vector-like leptons via single production at the 3 TeV CLIC
AU - Yin-Hao Gao
AU - Yao-Bei Liu
AU - Stefano Moretti
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.16413
UR - https://arxiv.org/abs/2610.16413
AB - The single production of first-generation SU(2)_L doublet vector-like leptons (VLLs) at the Compact Linear Collider (CLIC) with √s=3 TeV is studied. The neutral and charged VLL states are investigated through e^+e^-→ν_eN̅+ν̅_eN and e^+e^-→ e^± E^∓, respectively. The neutral VLL is searched for in the N→ W^∓ e^± channel with W^±→ jj, leading to the e^±+2j+slashedE_T final state. The charged VLL is explored through E^±→ e^± h (h→ bb̅) and E^±→ e^± Z (Z→ qq̅), yielding the e^+e^-+2b and e^+e^-+2j signatures. Signal and background simulations include initial-state radiation, beamstrahlung, and detector effects. Cut-based analyses are performed for integrated luminosities of $1$, $3$, and 5 ab^−1 to obtain the exclusion and discovery sensitivities in the VLL mass--mixing parameter space. The neutral-VLL channel gives the best sensitivity. At 1 ab^−1, the 2σ exclusion reaches ε≃0.013 at M_N=1.3 TeV and ε≃0.065 at M_N=2.9 TeV, while the 5σ discovery reach corresponds to ε≃0.02--$0.10$. At 5 ab^−1, the charged-VLL channels probe masses up to about 2.9 TeV and 2.8 TeV in the e^± h and e^± Z modes, respectively. These results demonstrate that a 3 TeV CLIC can provide sensitive probes of first-generation doublet VLLs over a wide mass range, including scenarios with small VLL--electron mixing.
ER -