News of the WeekHigh-Energy Physics

Evidence for 'Pentaquark' Particle Sets Theorists Re-Joyce-ing

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Science  11 Jul 2003:
Vol. 301, Issue 5630, pp. 153
DOI: 10.1126/science.301.5630.153a

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Three quarks for Muster Mark? Every physicist's favorite Finnegans Wake passage might need a little updating. Several experiments around the world seem to have created an exotic particle containing five quarks rather than the two or three that make up all other quarky matter.