Strong coupling constants of light pseudoscalar mesons with heavy baryons in QCD

Abstract

We calculate the strong coupling constants of light pseudoscalar mesons with heavy baryons within the light cone QCD sum rules method. It is shown that sextet--sextet, sextet--antitriplet and antitriplet--antitriplet transitions are described by one universal invariant function for each class. A comparison of our results on the coupling constants with the predictions existing in literature is also presented.

14 Pages, 3 Figures and 4 Tables

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• New ${\Lambda }_b(6072{)}^0$ state as a $2S$ bottom baryon
• Determination of the possible quantum numbers for the newly observed ${\Xi }_b(6227{)}^0$ state
• Analysis of heavy spin--3/2 baryon--heavy spin--1/2 baryon--light vector meson vertices in QCD
• Final-state rescattering mechanism in bottom-baryon decays