Prospects for probing neutral vector-like leptons via pair production at a muon collider
Abstract
Vector-like leptons (VLLs) are well-motivated candidates for physics beyond the standard model. We investigate the sensitivity of the $6$ TeV muon collider to the neutral doublet VLL (denoted by N) via its pair production in an SU(2)L doublet model with hypercharge Y=−1/2. Assuming mixing with muons, we study the subsequent decay N→ W+ μ- and analyze two representative signals, namely 4j2μ and 2ℓ2μEmkern−10.5 mu/, arising from the hadronic and leptonic decays of the W boson, respectively. The signal and background events are simulated within a Monte Carlo framework, and a cut-based analysis is performed at the $6$ TeV muon collider with an integrated luminosity ℒ=4 ab−1 for the unpolarized and polarized beam configurations, (Pμ+,Pμ-)=(0,0) and (Pμ+,Pμ-)=(−1,1). We consider VLL masses in the range of $1300-2980$ GeV and evaluate the corresponding search sensitivity. Our results show that the $6$ TeV muon collider could provide strong sensitivity to neutral doublet VLLs through the 4j2μ and 2ℓ2μEmkern−10.5 mu/ signals, particularly for the idealized fully polarized beam configuration, under the detector, polarization, luminosity and background assumptions adopted in this analysis.
Related
- Probing Heavy Neutral Leptons through New Gauge Interactions at the Forward Physics Facilities
- Probing the Single Production of First-Generation Singlet Vector-like Leptons at Future e+e- Colliders
- Probing a heavy neutral lepton in a radiative neutrino model at a muon collider
- Probing first-generation doublet vector-like leptons via single production at the 3 TeV CLIC
- Probing aQGCs from dimension-eight operators via neutral triboson production at muon colliders
BibTeX
@misc{yue2026prospects,
title = {{Prospects for probing neutral vector-like leptons via pair production at a muon collider}},
author = {Chong-Xing Yue and Mei-Shu-Yu Wang and Xin-Yang Li and Si-Yu Zhang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.27878},
eprint = {2606.27878},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.27878},
}
RIS
TY - UNPB
TI - Prospects for probing neutral vector-like leptons via pair production at a muon collider
AU - Chong-Xing Yue
AU - Mei-Shu-Yu Wang
AU - Xin-Yang Li
AU - Si-Yu Zhang
PY - 2026
DA - 2026/10/08
PB - arXiv
DO - 10.48550/arxiv.2606.27878
UR - https://arxiv.org/abs/2606.27878
AB - Vector-like leptons (VLLs) are well-motivated candidates for physics beyond the standard model. We investigate the sensitivity of the $6$ TeV muon collider to the neutral doublet VLL (denoted by N) via its pair production in an SU(2)_L doublet model with hypercharge Y=−1/2. Assuming mixing with muons, we study the subsequent decay N→ W^+ μ^- and analyze two representative signals, namely 4j2μ and 2ℓ2μEmkern−10.5 mu/, arising from the hadronic and leptonic decays of the W boson, respectively. The signal and background events are simulated within a Monte Carlo framework, and a cut-based analysis is performed at the $6$ TeV muon collider with an integrated luminosity ℒ=4 ab^−1 for the unpolarized and polarized beam configurations, (P_μ^+,P_μ^-)=(0,0) and (P_μ^+,P_μ^-)=(−1,1). We consider VLL masses in the range of $1300-2980$ GeV and evaluate the corresponding search sensitivity. Our results show that the $6$ TeV muon collider could provide strong sensitivity to neutral doublet VLLs through the 4j2μ and 2ℓ2μEmkern−10.5 mu/ signals, particularly for the idealized fully polarized beam configuration, under the detector, polarization, luminosity and background assumptions adopted in this analysis.
ER -