Looking forward to new Physics with FASER

• Felix Kling (SLAC)

Physics searches and measurements at high-energy collider experiments traditionally focus on the high-pT region. However, if particles are light and weakly-coupled, this focus may be completely misguided: light particles are typically highly collimated around the beam line, allowing sensitive searches with small detectors, and even extremely weakly-coupled particles may be produced in large numbers there. The recently approved FASER experiment will use the opportunity and extend the LHC's physic potential by searching for long-lived particles and studying neutrino interactions at TeV energies. In this talk, I will present the physics potential of FASER for new physics searches, neutrino physics and QCD, aiming to stimulate a fruitful discussion with my audience. <b>Bio</b> Felix Kling is postdoctoral researcher at the SLAC National Accelerator Laboratory and works in the field of theoretical high energy physics. In 2012, Felix received his Master degree at the University of Heidelberg under the supervision of Tilman Plehn. For graduate school, Felix moved to the University of Arizona where he worked on the phenomenology of extended Higgs with Shufang Su. Before graduating in 2016, Felix spent his last year of his PhD at Fermilab through the Fermilab Graduate Student Research Program in Theoretical Physics. From 2016-2019, Felix was postdoctoral researcher at the University of California in Irvine. During this time, he developed new machine-learning based analysis techniques for LHC analysis, and proposed the FASER experiment.