pentaquark
esiegel | June 21, 2013"In any case, the number three fitted perfectly the way quarks occur in nature." -Murray Gell-Mann
You might think that we know it all, at least as far as knowing-it-all is possible. After all, we know that matter is made up of atoms, which are made up of electrons and nuclei, and the nuclei are made up of protons and neutrons, and then the protons and neutrons are made up of quarks and gluons.
Image credit: Hyak / Martin Savage, eScience Institute, University of Washington.
Along with the electrons, the quarks and gluons are -- as far as we know -- indivisible, which places them among the…