Strange B mesons are noted for their ability to oscillate between matter and antimatter via a box-diagram with Δ m s = 17.77 ± 0.10 (stat) ± 0.07 (syst) ps measured by CDF experiment at Fermilab. That is, a meson composed of a bottom quark and strange antiquark, the strange B meson, can spontaneously change into an bottom antiquark and strange quark pair, the strange B meson, and vice versa.