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The Experimental Search for Pentaquark
The existence of an anti-decuplet of pentaquark particles has been predicted
some year ago within the chiral soliton model. In the last year, several
experimental groups have reported evidence for a S=+1 baryon resonance, with
mass ranging from 1.52 and 1.55 GeV and width less than 25 MeV, by looking at
the invariant mass of the system. This resonance, has been identified
with the lowest mass of the anti-decuplet, the . At the same time,
there are a number of experiment, mostly at high energies, that report null
results. An overview of the experimental results so far obtained will be given
here together with a review of the second generation experiments currently
ongoing and planned at Jefferson Lab Hall B.Comment: 10 pages, 9 figures, 3 tables Proceedings of the INCP2004 Conference
- Goteborg (Sweden) June 27 - July 2, 200