SU(3) prediction of a new Lambda baryon

Details SU(3) prediction of a new Lambda baryon SU(3) prediction of a new Lambda baryon

2005-12-21

arxiv.org/abs/hep-ph/0512276v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, RevTeX

Scientific paper

Using the approximate flavor SU(3) symmetry of strong interactions, we argue for the existence of a new Lambda baryon with J^P=3/2^-, the mass around 1850 MeV, the total width of about 130 MeV, significant branching into the Sigma \pi and Sigma^{\ast} \pi states and a vanishingly small coupling to the N {\bar K} state. This confirms quark model predictions suggesting a new Lambda baryon in the mass range between 1775 MeV and 1880 MeV with a very small coupling to the N {\bar K} state.

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