Physicists 'See' Single Top Quarks at the Tevatron

(PhysOrg.com) -- Scientists at the world's largest fully operating particle accelerator, the Tevatron at Fermi National Accelerator Laboratory (Fermilab) in Illinois, have discovered convincing evidence suggesting the existence of top quarks that are not coupled to their antiparticle, the antitop. These "single" top quarks have been hunted since Fermilab scientists first discovered top-antitop pairs in 1995.