Work

Muon trident process at far-forward LHC detectors

Year: 2026

Type: article

Abstract: The electromagnetic production of a dilepton pair in the muon-ion scattering, usually denoted muon trident process, is investigated considering the feasibility of studying processes induced by muons at LHC using its far-forward detectors. The total and differential cross-sections are estimated taking into account of the Bethe-Heitler and bremsstrahlung channels, and predictions for the event rates expected for muon-tungsten ( μW ) collisions at the LHC energies are presented. Our results indicate that the observation of the muon trident process is feasible at FASER ν . In particular, our results indicate that the electromagnetic production of τ + τ − pairs in the μW scattering can, in principle, be observed for the first time ever at the LHC. In addition, we present our predictions for the production of QED bound states. Finally, results for the trident process at the FASER ν 2 detector are also presented.

Source: Nuclear Physics B

DOI: 10.1016/j.nuclphysb.2026.117396

Authors: Reinaldo Francener, Victor P. Gonçalves, Gabriel Rabelo-Soares

Institutions: Universidade Estadual de Campinas (UNICAMP), Universidade Federal de Pelotas

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond