Neutrino trident process at a muon collider

@misc{francener2026neutrino,
  title = {{Neutrino trident process at a muon collider}},
  author = {Reinaldo Francener and Victor P. Goncalves},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.00723},
  eprint = {2610.00723},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.00723},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Neutrino trident process at a muon collider
AU  - Reinaldo Francener
AU  - Victor P. Goncalves
PY  - 2026
DA  - 2026/10/01
PB  - arXiv
DO  - 10.48550/arxiv.2610.00723
UR  - https://arxiv.org/abs/2610.00723
AB  - A TeV-scale muon collider enables the production of a highly collimated high-energy neutrino flux by muon decay in the straight sections of the collider ring. Recent studies have demonstrated that these neutrinos can be used for high-precision measurements in neutrino physics with a dedicated far-forward neutrino detector. In this study, we investigate the potentiality of the muon collider to discover the rare neutrino trident process, which is characterized by the fusion between a weak boson from the neutrino and a photon from the Coulomb field of the nucleus target. Our results indicate large neutrino trident rates per year [𝒪(10^3)] in a baseline 10 kg neutrino detector for a configuration of different flavour pairs of charged leptons in the final state, which will allow high-precision tests of the Standard Model and searches for New Physics. As a first example, we investigate the impact of the a new gauge boson Z', as predicted by the L_μ− L_τ model, and derive the projected sensitivity to this new gauge boson. Our findings show that a neutrino detector at a muon collider will significantly extend the current excluded regions of the parameter space.
ER  -