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Contact: Judy Jackson
jjackson@fnal.gov
630-840-3351
DOE/Fermi National Accelerator Laboratory
Caption: Six quarks -- up, down, strange, charm, bottom and top -- are the building blocks of matter. Protons and neutrons are made of up and down quarks, held together by the strong nuclear force. The DZero experiment has discovered the Cascade-b particle, which contains a down quark (d), strange quark (s) and bottom quark (b). It is the first particle ever observed with one quark from each generation of particles.
Credit: Fermilab
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Related news release: Fermilab physicists discover 'triple-scoop' baryon
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