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Rubbia (left) and Van der Meer (right) celebrating their Nobel Prize at CERN, the European particle physics laboratory, in 1984. Italian physicist Carlo Rubbia (born 1934) and Dutch physicist and particle accelerator designer Simon van der Meer (1925-2011) were awarded the 1984 Nobel Prize in Physics for their contribution to the discovery of the W and Z bosons, which mediate the weak nuclear force. Rubbia worked on CERN's Super Proton Synchrotron (SPS) and led the 1983 UA1 detector experiment that detected the W and Z bosons. Van der Meer invented the key technique of stochastic cooling of particle beams. The award of the prize was announced on 17 October 1984, with this reception held later that month.
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