Elusive masses of up, down and strange quarks pinned down
Monday, May 3, 2010 - 16:40
in Physics & Chemistry
Quarks, the elementary particles that make up protons and neutrons, have been notoriously difficult to nail down -- much less weigh -- until now. A research group has calculated, with a razor-thin margin of error, the mass of the three lightest and, therefore, most elusive quarks: up, down and strange.