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Excited $Λ_Q$ Baryons in the Large $N_c$ Limit

Chi-Keung Chow·Mark B. Wise
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Abstract

The spectrum of excited $Λ_Q$-type heavy baryons is considered in the large $N_c$ limit. The universal form factors for $Λ_b$ semileptonic decay to excited charmed baryons are calculated in the large $N_c$ limit. We find that the Bjorken sum rule (for the slope of the Isgur--Wise function) and Voloshin sum rule (for the mass of the light degrees of freedom) are saturated by the first doublet of excited $Λ_Q$ states.

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Chi-Keung Chow, Mark B. Wise. 1994-02-17. Excited $Λ_Q$ Baryons in the Large $N_c$ Limit. https://doi.org/10.1103/physrevd.50.2135

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