CDMSlite FCP Search
While the Standard Model does not anticipate the existence of free particles with a fractional electric charge, these fractionally charged particles (FCPs) have not been experimentally excluded. The standard model of particle physics does have quarks and antiquarks with ±2e/3 and ±e/3 charges, but their strong interaction binds them inside unit-charged hadrons. Free fractionally charged particles are a feature of viable extensions to the Standard Model with extra U(1) gauge symmetries. CDMSlite Run 2 period 1 data is used to search for cosmogenic FCPs with far smaller electric charge than any prior search. These results are the first to marginalize over mass and to consider non-minimum ionizing, cosmogenic FCPs.
Poudel, Sudip, "CDMSlite FCP Search" (2020). IdeaFest. 113.