7-9 May 2018
University of Pittsburgh
US/Eastern timezone


May 8, 2018, 3:15 PM
G-29 (Benedum Hall)


Benedum Hall

parallel talk BSM III


Felix Kling (University of California, Irvine)


New physics has traditionally been expected in the high-pT region at high-energy collider experiments. If new particles are light and weakly-coupled, however, this focus may be completely misguided: light particles are typically highly concentrated within a few mrad of the beam line, allowing sensitive searches with small detectors, and even extremely weakly-coupled particles may be produced in large numbers there. We propose a new experiment, ForwArd Search ExpeRiment, or FASER, which would be placed downstream of the ATLAS or CMS interaction point in the very forward region and operated concurrently there. As a concrete example of light, weakly-coupled particles, we consider dark photons, dark Higgs bosons, ALPs and sterile neutrinos. We find that even a relatively small and inexpensive cylindrical detector can discover such particles in a large and unprobed region of parameter space.

Primary authors

Felix Kling (University of California, Irvine) Jonathan Lee Feng (University of California Irvine (US)) Sebastian Trojanowski (National Centre for Nuclear Research, Poland) Iftah Galon (Rutgers University)

Presentation materials