Located in the far-forward region of the LHC, FASER provides a unique environment to study neutrinos produced in proton-proton collisions at TeV energies. This project focuses on how neutrinos interact at the highest man-made energies and on precision measurements of tau neutrino production and interactions in this regime.

A central component of the project is the development of advanced reconstruction techniques that combine information from FASER’s electronic spectrometer, Interface Tracker, and nuclear emulsion detector systems. These methods will enable precise matching of charged-particle tracks across detector subsystems and allow accurate reconstruction of neutrino interaction vertices and decay topologies, including tau lepton decays.

Using these reconstruction tools, the student will perform precision measurements of tau neutrino production and interactions with the full Run 3 dataset. As the least experimentally explored neutrino flavour, tau neutrinos provide a unique opportunity to probe lepton flavour universality and extend measurements of neutrino interactions into a previously inaccessible energy regime. FASER is uniquely positioned to establish detailed experimental constraints on tau neutrino behaviour at TeV energies.

In parallel with the physics analysis, the student will contribute to the development of the next-generation electronic neutrino detector for the HL-LHC. This will include work on optimising tracking and reconstruction performance and supporting detector design and prototyping for operation in the more demanding future LHC environment.

Overall, this project will deliver measurements of tau neutrino interactions at the highest energies achieved in a laboratory setting, enabled by advanced reconstruction techniques that unify spectrometer and emulsion information. The student will gain training in state-of-the-art particle physics analysis, detector development, and reconstruction algorithms at the energy frontier, contributing both to current FASER results and to the future HL-LHC neutrino programme.

Located in the far-forward region of the LHC, FASER provides a unique environment to study neutrinos produced in proton-proton collisions at TeV energies. This project focuses on how neutrinos interact at the highest man-made energies and on precision measurements of tau neutrino production and interactions in this regime.

A central component of the project is the development of advanced reconstruction techniques that combine information from FASER’s electronic spectrometer, Interface Tracker, and nuclear emulsion detector systems. These methods will enable precise matching of charged-particle tracks across detector subsystems and allow accurate reconstruction of neutrino interaction vertices and decay topologies, including tau lepton decays.

Using these reconstruction tools, the student will perform precision measurements of tau neutrino production and interactions with the full Run 3 dataset. As the least experimentally explored neutrino flavour, tau neutrinos provide a unique opportunity to probe lepton flavour universality and extend measurements of neutrino interactions into a previously inaccessible energy regime. FASER is uniquely positioned to establish detailed experimental constraints on tau neutrino behaviour at TeV energies.

In parallel with the physics analysis, the student will contribute to the development of the next-generation electronic neutrino detector for the HL-LHC. This will include work on optimising tracking and reconstruction performance and supporting detector design and prototyping for operation in the more demanding future LHC environment.

Overall, this project will deliver measurements of tau neutrino interactions at the highest energies achieved in a laboratory setting, enabled by advanced reconstruction techniques that unify spectrometer and emulsion information. The student will gain training in state-of-the-art particle physics analysis, detector development, and reconstruction algorithms at the energy frontier, contributing both to current FASER results and to the future HL-LHC neutrino programme.