Ξ c → Ξ semileptonic decays: A light cone sum rules view on the experiment-lattice tension
Year: 2025
Type: article
Abstract: We present a light-cone QCD sum rule (LCSR) analysis of the semileptonic decays of Ξ c baryons, focusing on the channels Ξ c 0 → Ξ − ℓ + ν ℓ , and Ξ c + → Ξ 0 ℓ + ν ℓ . The transition form factors are calculated within the light-cone quantum chromodynamics (QCD) sum rules framework, using the distribution amplitudes of the heavy Ξ c 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 ( Ξ c 0 → Ξ − ℓ + ν ℓ ) = ( 3.73 ± 1.04 ) % , B ( Ξ c 0 → Ξ − μ + ν μ ) = ( 3.59 ± 1.01 ) % , B ( Ξ c + → Ξ 0 ℓ + ν ℓ ) = ( 11.2 ± 3.25 ) % , and B ( Ξ c + → Ξ 0 μ + ν μ ) = ( 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.
DOI: 10.1103/16zp-mzpd
Authors: T. M. Aliev, S. Bilmis, M. Savci
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4417440191