2025/09/12 by T. M. Aliev, Aliev, T. M., S. Bilmiş +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2509.10181
openalex publication_date 2025/09/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a light-cone QCD sum rule analysis of the semileptonic decays of Ξc baryons, focusing on the channels Ξc0 → Ξ- ℓ+ ν_ℓ, and Ξc+ → Ξ0 ℓ+ ν_ℓ. The transition form factors are calculated within the light-cone QCD sum rules framework, using the distribution amplitudes of the heavy Ξc baryons. The obtained form factors are then used to compute the differential and total decay widths, as well as the branching fractions. Our numerical results for the branching fractions are B(Ξc0 → Ξ- ℓ+ ν_ℓ) = (3.73 ± 1.04)~% , B(Ξc0 → Ξ- μ+ νμ) = (3.59 ± 1.01)~%, B(Ξc+ → Ξ0 ℓ+ ν_ℓ) = (11.2 ± 3.25)~%, and B(Ξc+ → Ξ0 μ+ νμ) = (10.8 ± 3.13)~%. These results are in good agreement with recent lattice QCD calculations, while being larger than the current experimental measurements and differing from the predictions of other theoretical approaches.