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Semileptonic bc to cc and bb to bc baryon decays and heavy quark spin symmetry |
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| Authors: | JNieves JMFlynn EHernández |
| Institution: | 1. Instituto de Física corpuscular(IFIC),Centro Mixto Universidad de Valencia-CSIC,Institutos de Investigación de Paterna,Aptdo.22085,46071,Valencia,Spain 2. School of Physics and Astronomy,University of Southampton,Highfield,Southampton SO17 1BJ,UK 3. Departamento de Física Fundamental e IUFFyM,Universidad de Salamanca,E-37008 Salamanca,Spain |
| Abstract: | We study the semileptonic decays of the lowest-lying be baryons to the lowest-lying cc baryons(Ξ)('*)bc→Ξ(*)cc and Ω('*)bc →Ω(*)cc)in the limit mb,mc>>ΛQCD and close to the zero recoil point.The separate heavy quark spin symmetries make it possible to describe all these decays using a single form factor.We also show how these constraints can be used to test the validity of different quark model calculations,bb to bc baryon decays are also discussed. |
| Keywords: | heavy quark spin symmetry semileptonic decays constituent quark models |
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