Physicists observe subatomic quick-change artist

It's taken 19 long years of painstaking, high-precision experiments, but it's finally official: Physicists have announced the observation of a subatomic particle known as the B_s (pronounced "B sub s") meson switching between matter and antimatter states at a mind-boggling 3 trillion times per second.

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<p><a href="http://www.physorg.com/news78410254.html">Physicists observe subatomic quick-change artist</a></p> <p>It's taken 19 long years of painstaking, high-precision experiments, but it's finally official: Physicists have announced the observation of a subatomic particle known as the B_s (pronounced "B sub s") meson switching between matter and antimatter states at a mind-boggling 3 trillion times per second.</p>