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High Energy Phenomenology, Experiment, and Cosmology Seminar Series artwork
November 2, 20224:00 pm – 5:00 pm (CDT)

Searches for New Physics with a Stopped-pion Source at the Fermilab Accelerator Complex


Jacob Zettlemoyer (Fermilab)


Doojin Kim



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

The PIP-II complex at Fermilab is slated for operation later this decade and can support a MW-class O(1 GeV) proton fixed-target program in addition to the beam required for DUNE. Proton collisions with a fixed target could produce a bright stopped-pion neutrino source. The addition of an accumulator ring allows for a pulsed neutrino source with a high duty factor to suppress backgrounds. This source supports a program to search for new physics particularly in the dark sector, such as sensitive searches for accelerator-produced light dark matter, active-to-sterile neutrino oscillations, and other models such as axion-like particles (ALPs). A key feature of the PIP2-BD program is the ability to design the detector hall at Fermilab specifically for HEP physics searches. I will present the PIP-II project and upgrades towards a stopped-pion neutrino source at Fermilab and studies showing the sensitivities of the conceptual PIP2-BD detector, a O(100 ton) liquid argon scintillation detector to several dark sector models accessible with this source. 

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