Pentaquark Searches

Details Pentaquark Searches Pentaquark Searches

2007-02-28

arxiv.org/abs/hep-ph/0703004v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 figures, Proceedings of the Hypernuclear 2006 Conference. Version 2: added one reference. Version 3: corrected some

Scientific paper

Current evidence does not favor the existence of the \thplus pentaquark, which was reported by several groups in the years after 2002. The question naturally arises: how could many groups could have seen fluctuations in their data at the level of 3-5 $\sigma$ statistical significance? An example of a statistical fluctuation is given and the number of $\sigma$'s necessary for claims of discovery are examined. Using this guideline, a possible answer to the above question is presented.

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