Determination of the strong vertices of doubly heavy baryons with pseudoscalar mesons in QCD

Abstract

The strong coupling constant of doubly heavy baryons with light pseudoscalar mesons π and K are computed within the light cone sum rules. We take into account two-particle and three-particle distribution amplitudes of the said pseudoscalar mesons. We compare our result with the one existing in the literature.

QCD sum rules analysis of weak decays of doubly heavy baryons: the $$b\rightarrow c$$ processes

“…The discovery of the doubly charmed baryon has triggered many related theoretical researches on the masses, lifetimes, strong coupling constants, and decay widths of doubly heavy baryons. They are based on various model calculations , SU(3) symmetry analysis [27][28][29], effective theories [30][31][32][33][34][35][36][37][38][39][40], QCD sum rules [41][42][43] and light-cone sum rules [44][45][46][47][48][49][50][51][52]. For a recent review, see [53].…”

QCD sum rules analysis of weak decays of doubly heavy baryons: the $b\to c$ processes

“…The discovery of the doubly charmed baryon has triggered many related theoretical researches on the masses, lifetimes, strong coupling constants, and decay widths of doubly heavy baryons. They are based on various model calculations , SU(3) symmetry analysis [27][28][29], effective theories [30][31][32][33][34][35][36][37][38][39][40], QCD sum rules [41][42][43]and light-cone sum rules [44][45][46][47][48][49][50][51][52]. For a recent review, see [53].…”

Strong Vertices of Doubly Heavy Spin-3/2 Baryons with Light Pseudoscalar Mesons

“…Beyond the quark models [36][37][38], many effective models like lattice QCD [39], Quark Spin Symmetry [40,41], QCD Sum Rules [22][23][24][25][26] and Light-Cone Sum Rules [19,20,[42][43][44][45][46][47][48][49] have been proposed to describe masses, residues, lifetimes, strong coupling constants, and other properties of doubly heavy baryons. Given that the expectations to discover more doubly heavy baryons are growing, we are witnessing the rise of further theoretical investigations in this respect.…”