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• n  an unstable negatively charged proton; the antiparticle of a proton

• The antiproton, having lost its negative charge and received nothing in return, also became a chargeless particle, but it did not become a normal neutron.
• The anti-lambda (3) turns into an antiproton and a positive pi meson.
• One of physics' most exciting recent discoveries is the antiproton.

News & Articles

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• Dr. Gordon Feldman, Johns Hopkins physicist
  Dr. Gordon Feldman, a Johns Hopkins physicist who contributed to discovery of the antiproton, died in his sleep Wednesday at Symphony Manor Assisted Living from complications of Alzheimer's.        
  Feb. 17, 2014 - Baltimore Sun