Searching for vectorlike T quarks in the T→ tZ channel at a future muon-proton collider
Abstract
We investigate the discovery potential of a singly produced vector-like top quark T in the T→ tZ decay channel at future muon-proton (μp) colliders, considering three benchmark center-of-mass energies: √s=5.29, $6.48$, and $9.16$~TeV. The baseline signal final state consists of a semileptonic top decay t→ bW→ bℓν and a hadronic Z→ qq̅ decay, where the collimated quark pair from the Z boson is reconstructed as a single large-radius fat jet J. Full detector-level Monte Carlo simulations are performed for both the signal process and the dominant Standard Model backgrounds. We derive the 5σ discovery contours and the 95% confidence level exclusion limits in the two-dimensional parameter space spanned by the VLQ mass mT and the effective coupling g*. A comparison with the T→ Wb channel and with searches at other collider facilities reveals that the T→ tZ decay mode provides complementary sensitivity and offers unique advantages for probing high-mass vector-like T quarks in the boosted jet topology.
Related
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BibTeX
@misc{gao2026searching,
title = {{Searching for vectorlike $T$ quarks in the $T\to tZ$ channel at a future muon-proton collider}},
author = {Yin-Hao Gao and Yao-Bei Liu},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.28285},
eprint = {2608.28285},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.28285},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Searching for vectorlike T quarks in the T→ tZ channel at a future muon-proton collider
AU - Yin-Hao Gao
AU - Yao-Bei Liu
PY - 2026
DA - 2026/08/28
PB - arXiv
DO - 10.48550/arxiv.2608.28285
UR - https://arxiv.org/abs/2608.28285
AB - We investigate the discovery potential of a singly produced vector-like top quark T in the T→ tZ decay channel at future muon-proton (μp) colliders, considering three benchmark center-of-mass energies: √s=5.29, $6.48$, and $9.16$~TeV. The baseline signal final state consists of a semileptonic top decay t→ bW→ bℓν and a hadronic Z→ qq̅ decay, where the collimated quark pair from the Z boson is reconstructed as a single large-radius fat jet J. Full detector-level Monte Carlo simulations are performed for both the signal process and the dominant Standard Model backgrounds. We derive the 5σ discovery contours and the 95% confidence level exclusion limits in the two-dimensional parameter space spanned by the VLQ mass m_T and the effective coupling g^*. A comparison with the T→ Wb channel and with searches at other collider facilities reveals that the T→ tZ decay mode provides complementary sensitivity and offers unique advantages for probing high-mass vector-like T quarks in the boosted jet topology.
ER -