Quark and Pole Models of Nonleptonic Decays of Charmed Baryons

Details Quark and Pole Models of Nonleptonic Decays of Charmed Baryons Quark and Pole Models of Nonleptonic Decays of Charmed Baryons

1993-09-15

arxiv.org/abs/hep-ph/9309265v1

Phys.Rev. D50 (1994) 402-411

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, LATEX, 1643/PH IFJ Krakow

Scientific paper

10.1103/PhysRevD.50.402

Quark and pole models of nonleptonic decays of charmed baryons are analysed from the point of view of their symmetry properties. The symmetry structure of the parity conserving amplitudes that corresponds to the contribution of the ground-state intermediate baryons is shown to differ from the one hitherto employed in the symmetry approach. It is pointed out that the "subtraction" of sea quark effects in hyperon decays leads to an estimate of $W$-exchange contributions in charmed baryon decays that is significantly smaller than naively expected on the basis of $SU(4)$. An $SU(2)_{W}$ constraint questioning the reliability of the factorization technique is exhibited. Finally, a successful fit to the available data is presented.

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