@article{THESIS,
      recid = {12316},
      author = {Putnam, Gray Louis Campbell},
      title = {Search for New Physics through a Long-Lived Di-Muon  Resonance in the NuMI Beam with the ICARUS Detector},
      publisher = {University of Chicago},
      school = {Ph.D.},
      address = {2024-06},
      number = {THESIS},
      pages = {230},
      abstract = {Many of the unexplained phenomena in particle physics and  cosmology today, such as the microphysical nature of dark  matter, the strong CP problem, and the origin of the  neutrino masses, can be resolved by the existence of a  light (~GeV), weakly-coupled hidden sector of new physics.  Such hidden sectors often predict the existence of  “long-lived” particles (LLPs) that travel a far distance  from production before decaying into Standard Model  particles. Neutrino oscillation experiments, which combine  intense particle beams with precise imaging detectors, are  well equipped to probe LLP models with new sensitivity.   This thesis details a search for a long-lived particle  decaying to two muons with the ICARUS liquid argon time  projection chamber (LArTPC) neutrino detector in the  Short-Baseline Neutrino program at Fermilab. The  calibration of the ICARUS time projection chamber (TPC)  which enables the search is also presented. Notably, the  calibration measures an angular dependence in electron-ion  recombination in argon, a novel effect in the detector  physics of LArTPCs.  The search is performed using data  taken with the Neutrinos at the Main Injector (NuMI) beam,  with an exposure of 2.41e20  protons on target.  No  significant excess over background is observed, and we set  world-leading limits on two new physics models that predict  this process: the Higgs portal scalar and a heavy axion  model. We also present the sensitivity in a  model-independent way applicable to any new physics model  predicting the process K → π + S(→μμ), for a long-lived  particle S.},
      url = {http://knowledge.uchicago.edu/record/12316},
      doi = {https://doi.org/10.6082/uchicago.12316},
}