You discovered the bottom quark.
The bottom (or beauty) quark is a third-generation quark with a charge of -1/3. It has a large mass (around 4.2 GeV/c^2 — more that 4 times the proton mass!). The bottom quark is notable because it is a product in almost all top quark decays, and is a frequent decay product for the Higgs boson.
The bottom quark was predicted in 1973 by physicists Makoto Kobayashi and Toshihide Maskawa as part of their explanation for CP violation. The name "bottom" was introduced in 1975 by Haim Harari. The bottom quark was discovered in 1977 by the Fermilab E288 experiment team led by Leon M. Lederman, when collisions produced bottomonium. Kobayashi and Maskawa won the 2008 Nobel Prize in Physics for their explanation of CP-violation. Upon its discovery, there were efforts to name the bottom quark "beauty", but "bottom" became the predominant name.