3 Trillion oscillations per second

[wa1ex]

Fermilab's CDF scientists make it official: They have discovered the quick-change behavior of the B-sub-s meson, which switches between matter and antimatter 3 trillion times a second.

Full Article:
http://www.fnal.gov/pub/presspass/press_releases/CDF_meson.html

BATAVIA, Illinois - Scientists of the CDF collaboration at the Department of Energy's Fermi National Accelerator Laboratory announced today (September 25, 2006) that they have met the exacting standard to claim discovery of astonishingly rapid transitions between matter and antimatter: 3 trillion oscillations per second.

Dr. Raymond L. Orbach, Undersecretary for Science in the U.S. Department of Energy, congratulated the CDF collaboration on the result.

I dont fully understand how such an accurate measurement was done..
if anyone has any other articles regarding this please share, thanks.