Abstract
Form factors of the weak $\Xi_c \to \Xi(\Lambda)$ transitions are calculated within the light cone QCD sum rules. The pollutions coming from the contribution of the negative parity $\Xi_c^*$ baryon is eliminated by considering the combinations of sum rules corresponding to the different Lorentz structures. Having obtained the form factors, the branching ratios of the $\Xi_c \to \Xi (\Lambda) \ell \nu$ decays are also calculated, and our predictions are compared with the results of other approaches as well as the measurements done by BELLE and ALICE Collaborations.
Highlights
The electroweak decays of the heavy flavored hadrons provide useful information about the helicity structure of the effective Hamiltonian and the matrix elements of the Cabibbo-Kobayashi-Maskawa matrix (CKM)
Having obtained the form factors, the branching ratios of the Ξc → ΞðΛÞlν decays are calculated, and our predictions are compared with the results of other approaches as well as the measurements done by the BELLE and ALICE collaborations
The study of the semileptonic Ξc → BðB 1⁄4 Ξ or ΛÞlν decays that are induced by the c → s and c → d transitions are helpful for precise determination of the values of the CKM matrix elements Vcs and Vcd
Summary
Form factors of the weak Ξc → ΞðΛÞ transitions are calculated within the light cone QCD sum rules. The pollution coming from the contribution of the negative parity ΞÃc baryon is eliminated by considering the combinations of sum rules corresponding to the different Lorentz structures. Having obtained the form factors, the branching ratios of the Ξc → ΞðΛÞlν decays are calculated, and our predictions are compared with the results of other approaches as well as the measurements done by the BELLE and ALICE collaborations
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