Searching for millicharged particles with 1 kg of Skipper-CCDs using the NuMI beam at Fermilab

Abstract

Oscura is a planned light-dark matter search experiment using Skipper-CCDs with a total active mass of 10 kg. As part of the detector development, the collaboration plans to build the Oscura Integration Test (OIT), an engineering test with 10% of the total mass. Here we discuss the early science opportunities with the OIT to search for millicharged particles (mCPs) using the NuMI beam at Fermilab. mCPs would be produced at low energies through photon-mediated processes from decays of scalar, pseudoscalar, and vector mesons, or direct Drell-Yan productions. Estimates show that the OIT would be a world-leading probe for mCPs in the MeV mass range.

13 pages, 10 figures

References in corpus (5)

• Single-electron and single-photon sensitivity with a silicon Skipper CCD
• SENSEI: Direct-Detection Constraints on Sub-GeV Dark Matter from a Shallow Underground Run Using a Prototype Skipper-CCD
• Ionization Yield in Silicon for eV-Scale Electron-Recoil Processes
• Dark Sector Physics at High-Intensity Experiments
• SENSEI: Search for Millicharged Particles produced in the NuMI Beam

Cited by in corpus (1)

• Collective excitations and low-energy ionization signatures of relativistic particles in silicon detectors