Light-Cone Sum Rules Analysis of ${\Xi }_{Q{Q}^{\prime }}\to {\Sigma }_{Q^{\prime }}$ Weak Decays

Abstract

As a continuation of our previous work, we investigate the weak decays of doubly-heavy baryons ${\Xi }_{Q{Q}^{\prime }}$ into sextet ${\Sigma }_{Q^{\prime }}$ with light-cone sum rules. We calculate the form factors for these decays with the parallel light-cone distribution amplitudes of ${\Sigma }_{Q^{\prime }}$. Numerical results of these form factors are used to predict the decay widths and branching ratios of the corresponding semi-leptonic processes. Parametric uncertainties and theoretical analyses are also given in detail. We find that the decay widths of ${\Xi }_{cc}$ and ${\Xi }_{bc}$ decays are several orders of magnitude larger than those of ${\Xi }_{bb}$ decays.

20 pages, 3 figures, 9 tables. arXiv admin note: substantial text overlap with arXiv:1903.03921

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Cited by in corpus (14)

• Rescattering mechanism of weak decays of double-charm baryons
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• QCD sum rules analysis of weak decays of doubly heavy baryons: the $b\to c$ processes
• Weak decays of triply heavy baryons in light front approach
• Strong $B_{Q{Q}^{\prime }}^{\ast }{B}_{Q{Q}^{\prime }}V$ vertices and the radiative decays of $B_{QQ}^{\ast }\to B_{QQ}\gamma$ in the light-cone sum rules
• Strong interaction of doubly heavy spin-3/2 baryons with light vector mesons
• Mass spectra of bottom-charm baryons
• W-exchange contribution to the decays ${\Xi }_{cc}^{++}\to {\Xi }_c^{+(\prime )}{\pi }^{+}$ using light-cone sum rules
• Study on the weak decay between two heavy baryons ${\mathcal{B}}_i({\frac{1}{2}}^{+})\to {\mathcal{B}}_f({\frac{3}{2}}^{+})$ in the light-front quark model
• Analysis of FCNC ${\Xi }_{QQ}\to {\Lambda }_Q{l}^{+}{l}^{-}$ decay in light-cone sum rules
• Light-Cone Sum Rules Analysis of ${\Xi }_{Q{Q}^{\prime }q}\to {\Sigma }_{Q^{\prime }}^{\ast }$ Weak Decays
• Semileptonic decays of doubly charmed baryons with bag model
• Strong Vertices of Doubly Heavy Spin-3/2 Baryons with Light Pseudoscalar Mesons
• Chiral Lagrangians for spin-$\frac{1}{2}$ and spin-$\frac{3}{2}$ doubly charmed baryons