Parametrization of the Semileptonic Baryon Matrix Elements
Apr, 198910 pages
Published in:
- Phys.Rev.D 40 (1989) 3111
Report number:
- Print-89-0423 (GENOA)
Citations per year
Abstract: (APS)
We present a general parametrization of the semileptonic decays of the baryons obtained, as for the magnetic moments, performing a unitary transformation that connects the exact states to the model states. We show that again the nonrelativistic-quark-model (NRQM) description amounts to selecting certain terms among those of the general parametrization; in the no-flavor-breaking approximation the parametrization contains two parameters (a and b) linearly related to the Cabibbo's D, F and associated, in the NRQM language, to the one-quark and two-quark terms. The NRQM amounts to keeping the largest (one-quark) term with a coefficient a(≃0.75); b is 3-10% of a. Finally, we clarify the variety of possible terms that appear on going beyond the flavor symmetric approximation.- baryon: semileptonic decay
- parametrization
- quark: nonrelativistic
- transformation: unitarity
- symmetry: flavor
- SYMMETRY: FLAVOR
References(4)
Figures(0)