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DOE OSTI · 21426416

Rare {Lambda}{sub b} decays in a quark model

Mott, L·Roberts, W
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Abstract

Hadronic form factors for the rare weak transitions {Lambda}{sub b{yields}{Lambda}}{sup (*)} are calculated using a nonrelativistic quark model. The form factors obtained in this way are found to satisfy the relationships expecetd from the heavy quark effective theory. Differential decay rates and branching ratios are calculated for the dileptonic decays {Lambda}{sub b{yields}{Lambda}}{sup (*)}l{sup +}l{sup -}, for both ground state and excited daughter baryons. Inclusion of the long distance contributions from charmonium resonances significantly enhances the decay rates. Future work is outlined.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSB QUARKSBARYONSBEAUTY BARYONSBEAUTY PARTICLESBOSONSBRANCHING RATIOC QUARKSCHARM PARTICLESCHARMONIUMCOMPOSITE MODELSDECAYDIMENSIONLESS NUMBERSDISTANCEELECTROMAGNETIC FORM FACTORSELEMENTARY PARTICLESFERMIONSFIELD THEORIESFORM FACTORSHADRONSHYPERONSINTERACTION RANGELAMBDA B NEUTRAL BARYONSLAMBDA BARYONSMATHEMATICAL MODELSMESONSPARTICLE DECAYPARTICLE MODELSPARTICLE PROPERTIESPOSTULATED PARTICLESQUANTUM CHROMODYNAMICSQUANTUM FIELD THEORYQUARK MODELQUARKONIUMQUARKSRESONANCE PARTICLESSTRANGE PARTICLEST QUARKSTOP PARTICLES

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Mott, L, Roberts, W. 2010-08-05. Rare {Lambda}{sub b} decays in a quark model. https://doi.org/10.1063/1.3483354

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