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- W2098100402 abstract "Cabibbo-allowed two-body hadronic weak decays of bottom baryons are analyzed. Contrary to the charmed baryon sector, many channels of bottom baryon decays proceed only through the external or internal W-emission diagrams. Moreover, W-exchange is likely to be suppressed in the bottom baryon sector. Consequently, the factorization approach suffices to describe most of the Cabibbo-allowed bottom baryon decays. We use the nonrelativistic quark model to evaluate heavy-to-heavy and heavy-to-light baryon form factors at zero recoil. When applied to the heavy quark limit, the quark model results do satisfy all the constraints imposed by heavy quark symmetry. The decay rates and up-down asymmetries for bottom baryons decaying into $(1/2)^++P(V)$ and $(3/2)^++P(V)$ are calculated. It is found that the up-down asymmetry is negative except for $Omega_b to (1/2)^++P(V)$ decay and for decay modes with $psi'$ in the final state. The prediction $B(Lambda_b to J/psiLambda)=1.6 times 10^{-4}$ for $|V_{cb}|=0.038$ is consistent with the recent CDF measurement. We also present estimates for $Omega_c to (3/2)^++P(V)$ decays and compare with various model calculations." @default.
- W2098100402 created "2016-06-24" @default.
- W2098100402 creator A5003248254 @default.
- W2098100402 date "1997-09-01" @default.
- W2098100402 modified "2023-10-14" @default.
- W2098100402 title "Nonleptonic weak decays of bottom baryons" @default.
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- W2098100402 doi "https://doi.org/10.1103/physrevd.56.2799" @default.
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