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Science 19 November 2004:
Vol. 306. no. 5700, pp. 1281 - 1282
DOI: 10.1126/science.306.5700.1281

News Focus

HIGH-ENERGY PHYSICS:
Rara Avis or Statistical Mirage? Pentaquark Remains at Large

Charles Seife

Two years after its surprise appearance in debris from a nuclear collision, some researchers suspect an exotic particle may be a will-o'-the-wisp.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)