Measurement of $ψ(2S)$ decays to baryon pairs

Details Measurement of $ψ(2S)$ decays to baryon pairs Measurement of $ψ(2S)$ decays to baryon pairs

2000-08-17

arxiv.org/abs/hep-ex/0008031v1

Phys.Rev.D63:032002,2001

Physics

High Energy Physics

High Energy Physics - Experiment

22 pages, 21 figures, 4 tables

Scientific paper

10.1103/PhysRevD.63.032002

A sample of 3.95M $\psi(2S)$ decays registered in the BES detector are used to study final states containing pairs of octet and decuplet baryons. We report branching fractions for $\psi(2S)\to p\bar{p}$, $\Lambda\bar{\Lambda}$, $\Sigma^0\bar{\Sigma}{}^0$, $\Xi^-\bar{\Xi}{}^+$, $\Delta^{++}\bar{\Delta}{}^{--}$, $\Sigma^+(1385)\bar{\Sigma}{}^-(1385)$, $\Xi^0(1530)\bar{\Xi}{}^0(1530)$, and $\Omega^-\bar{\Omega}{}^+$. These results are compared to expectations based on the SU(3)-flavor symmetry, factorization, and perturbative QCD.

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