Quark and pole models of nonleptonic decays of charmed baryons - INSPIRE

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Quark and pole models of nonleptonic decays of charmed baryons

P. Zenczykowski
(
- Cracow, INP
)

Sep, 1993

25 pages

Published in:

Phys.Rev.D 50 (1994) 402-411

e-Print:

hep-ph/9309265 [hep-ph]

DOI:

10.1103/PhysRevD.50.402

Report number:

INP-1643-PH

View in:

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Abstract: (CERN)

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.

charmed baryon: nonleptonic decay
nonleptonic decay: charmed baryon
approximation: pole
symmetry: SU(2)
symmetry: SU(4)
parity: violation
violation: parity
factorization
quark
charmed baryon: branching ratio

References(25)

Figures(0)

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