While the standard model is enormously successful and internally self consistent, it does not explain a great number of phenomena and is far from a complete theory of particle interactions. Among these missing pieces are a particle theory of dark matter and the Strong CP problem in Quantum Chromodynamics (QCD). A hypothetical axion-like particle (ALP) is a prospective solution to both problems and can be searched for at accelerator produced beam dump experiments.
Neutrino detectors can be used for such a search, due to the similar energy regimes and interactions channels of such detections. The Coherent CAPTAIN Mills (CCM) experiment at the Los Alamos Neutron Science Center (LANCSE) has carried out a search for these ALPs across a number of theoretical models, including dark sector variants and the light QCD axion. An initial run with 120 photomultiplier tubes (PMTs) was used to identify 95\% confidence limits placed across parameter space using an engineering run, which identified several paths to improvement for a longer term search to probe the majority of theoretically motivated parameter space.
| Identifer | oai:union.ndltd.org:columbia.edu/oai:academiccommons.columbia.edu:10.7916/x9x1-ka48 |
| Date | January 2022 |
| Creators | Dunton, Edward C. |
| Source Sets | Columbia University |
| Language | English |
| Detected Language | English |
| Type | Theses |
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