Present status of the nonstrange and other flavor partners of the exotic Theta+ baryon

Details Present status of the nonstrange and other flavor partners of the exotic Theta+ baryon Present status of the nonstrange and other flavor partners of the exotic Theta+ baryon

2005-01-13

arxiv.org/abs/hep-ph/0501114v1

J.Phys.Conf.Ser.9:218,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, talk given at the Topical Group on Hadron Physics (Fermilab, Oct. 24-26, 2004)

Scientific paper

10.1088/1742-6596/9/1/040

Given the existing empirical information about the exotic Theta+ baryon, we analyze possible properties of its SU(3)F-partners, paying special attention to the nonstrange member of the antidecuplet N*. The modified piN partial-wave analysis presents two candidate masses, 1680 MeV and 1730 MeV. In both cases, the N* should be rather narrow and highly inelastic. Our results suggest several directions for experimental studies that may clarify properties of the antidecuplet baryons, and structure of their mixing with other baryons. Recent experimental evidence from the GRAAL and STAR Collaborations could be interpreted as observations of a candidate for the Theta+ nonstrange partner.

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