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New Universality of Baryon Isgur--Wise Form Factor in the Large $N_c$ limit

Chi-Keung Chow
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Abstract

New universality appears for the baryon Isgur--Wise form factor in the large $N_c$ limit. It is found that the semileptonic $Λ_b \rightarrow Λ_c$ and $Σ_b^{(*)} \rightarrow Σ^{(*)}_c$ decays are described by the same form factor, which can be calculated analytically. In the exact chiral $SU(3)$ limit, the same form factor is applicable to semileptonic $Ω_b^{(*)} \rightarrow Ω^{(*)}_c$ decays.

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Chi-Keung Chow. 1994-08-25. New Universality of Baryon Isgur--Wise Form Factor in the Large $N_c$ limit. https://doi.org/10.1103/physrevd.51.1224

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