With the recent discovery of the top quark --- the last and heaviest of the quarks --- a revised (1995) edition of the Fundamental Particles and Interactions chart has just been released. This chart is the physicist's answer to Mendeleev's Periodic Table of the elements.
The absence of information about the top quark was the big gap in the previous edition. In the five years since that edition, laboratories around the world have obtained much more detailed information about the zoo of particles such as quarks, Z bosons, tau leptons, and neutrinos. The new chart incorporates the latest data summaries provided by Lawrence Berkeley National Laboratory's authoritative Particle Data Group.
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Michael Barnett 2-MAR-1995
