Exclusive nonleptonic decays of bottom and charm baryons in a relativistic three-quark model: Evaluation of nonfactorizing diagrams
Exclusive nonleptonic decays of bottom and charm baryons in a relativistic three-quark model: Evaluation of nonfactorizing diagrams
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DOI：
10.1103/physrevd.57.5632
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发表时间：
1997-09
影响因子：
5
通讯作者：
M. Ivanov;J. Körner;V. Lyubovitskij;A. Rusetsky
中科院分区：
文献类型：
--
作者：
M. Ivanov;J. Körner;V. Lyubovitskij;A. Rusetsky
Exclusive nonleptonic decays of bottom and charm baryons are studied within a relativistic three-quark model with a Gaussian shape for the momentum dependence of the baryon--three-quark vertex. We include factorizing as well as nonfactorizing contributions to the decay amplitudes. For heavy-to-light transitions $\stackrel{\ensuremath{\rightarrow}}{Q}\mathrm{qud}$ the total contribution of the nonfactorizing diagrams amount up to \ensuremath{\sim}60% of the factorizing contributions in amplitude, and up to \ensuremath{\sim}30% for $\stackrel{\ensuremath{\rightarrow}}{b}c\ifmmode \bar{u}\else \={u}\fi{}d$ transitions. We calculate the rates and the polarization asymmetry parameters for various nonleptonic decays and compare them to existing data and to the results of other model calculations.
Exclusive nonleptonic decays of bottom and charm baryons are studied within a relativistic three-quark model with a Gaussian shape for the momentum dependence of the baryon--three-quark vertex. We include factorizing as well as nonfactorizing contributions to the decay amplitudes. For heavy-to-light transitions $\stackrel{\ensuremath{\rightarrow}}{Q}\mathrm{qud}$ the total contribution of the nonfactorizing diagrams amount up to \ensuremath{\sim}60% of the factorizing contributions in amplitude, and up to \ensuremath{\sim}30% for $\stackrel{\ensuremath{\rightarrow}}{b}c\ifmmode \bar{u}\else \={u}\fi{}d$ transitions. We calculate the rates and the polarization asymmetry parameters for various nonleptonic decays and compare them to existing data and to the results of other model calculations.