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Contact: Kurt Riesselmann
kurtr@fnal.gov
630-840-3351
DOE/Fermi National Accelerator Laboratory
Caption: Baryons are particles made of three quarks. The quark model predicts the combinations that exist with either spin J=1/2 (this graphic) or spin J=3/2. The graphic shows the various three-quark combinations with J=1/2 that are possible using the three lightest quarks -- up, down and strange -- and the bottom quark. The DZero collaboration discovered the Omega-sub-b, highlighted in the graphic. There exist additional baryons involving the charm quark, which are not shown. The top quark, discovered at Fermilab in 1995, is too short-lived to become part of a baryon.
Credit: Fermilab
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Related news release: Fermilab physicists discover 'doubly strange' particle
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