ANN ARBOR, Mich.---University of Michigan physicists played a leading role in the discovery of a new particle, the Omega b baryon, which is an exotic relative of the proton. It was detected for the first time in a particle accelerator at Fermi National Accelerator Laboratory (Fermilab) in Illinois, Fermilab has announced.
The heavy particle is scarce today, but scientists believe it was abundant soon after the Big Bang.