Probing TeV-scale Majorana neutrinos at a muon-proton collider via a lepton-number-violating fat-jet signature
- 1Henan Institute of Science and Technology
- 2Zhongyuan University of Science and Technology
Abstract
We investigate the sensitivity to TeV-scale heavy Majorana neutrinos at a future muon-proton collider with √s=5.3 TeV, based on 1 TeV muon and 7 TeV proton beams. We focus on the lepton-number-violating (LNV) process μ - p → jN, followed by N→ μ +W-→ μ +J, leading to the characteristic final state jμ +J. Here, j denotes the associated light jet from heavy-neutrino production, while J denotes the fat jet originating from the hadronic d ecay of the highly boosted W boson. This topology provides a clean experimental signature with strongly suppressed Standard Model backgrounds. A comprehensive signal and background analysis is performed using parton showering, fast detector simulation, and dedicated fat-jet reconstruction. We derive the projected 2σ exclusion limits on the muon-flavor mixing parameter |Vμ N|2 for integrated luminosities of 100 fb−1 and 1 ab−1. For heavy-neutrino masses in the range 1 TeV≤ mN≤ 3 TeV, the projected upper limits on |Vμ N|2 range from 2.6× 10−6 to 5.9× 10−5 at 1 ab−1. These results show that a future μ p collider can provide competitive and complementary sensitivity to TeV-scale heavy Majorana neutrinos compared with other proposed high-energy facilities.
Versions
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BibTeX
@article{liu2026probing,
title = {{Probing TeV-scale Majorana neutrinos at a muon-proton collider via a lepton-number-violating fat-jet signature}},
author = {Yao-Bei Liu},
journal = {The European Physical Journal C},
year = {2026},
month = nov,
doi = {10.1140/epjc/s10052-026-16575-2},
url = {https://link.springer.com/article/10.1140/epjc/s10052-026-16575-2},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Probing TeV-scale Majorana neutrinos at a muon-proton collider via a lepton-number-violating fat-jet signature
AU - Yao-Bei Liu
PY - 2026
DA - 2026/11/05
JO - The European Physical Journal C
DO - 10.1140/epjc/s10052-026-16575-2
UR - https://link.springer.com/article/10.1140/epjc/s10052-026-16575-2
AB - We investigate the sensitivity to TeV-scale heavy Majorana neutrinos at a future muon-proton collider with √s=5.3 TeV, based on 1 TeV muon and 7 TeV proton beams. We focus on the lepton-number-violating (LNV) process μ ^- p → jN, followed by N→ μ ^+W^-→ μ ^+J, leading to the characteristic final state jμ ^+J. Here, j denotes the associated light jet from heavy-neutrino production, while J denotes the fat jet originating from the hadronic d ecay of the highly boosted W boson. This topology provides a clean experimental signature with strongly suppressed Standard Model backgrounds. A comprehensive signal and background analysis is performed using parton showering, fast detector simulation, and dedicated fat-jet reconstruction. We derive the projected 2σ exclusion limits on the muon-flavor mixing parameter |V_μ N|^2 for integrated luminosities of 100 fb^−1 and 1 ab^−1. For heavy-neutrino masses in the range 1 TeV≤ m_N≤ 3 TeV, the projected upper limits on |V_μ N|^2 range from 2.6× 10^−6 to 5.9× 10^−5 at 1 ab^−1. These results show that a future μ p collider can provide competitive and complementary sensitivity to TeV-scale heavy Majorana neutrinos compared with other proposed high-energy facilities.
SN - 1434-6052
ER -