Semileptonic decay of $\Lambda_b^0 \to \Lambda_c (2860)^+/\Lambda_c(2625)^+\ell^-\overline{\nu}_\ell$ within QCD light-cone sum rules
High Energy Physics - Phenomenology
2026-05-25 v1
Abstract
In this work, we calculate the transition form factors for the weak decays and using QCD light-cone sum rules, and compute the branching fractions of the corresponding semileptonic decays and . Our predicted branching fraction for is consistent with experimental data and other theoretical predictions, validating the reliability of our method. On this basis, we also present the branching fraction of . These results may serve as a theoretical reference for future experimental measurements of this decay channel.
Cite
@article{arxiv.2605.23716,
title = {Semileptonic decay of $\Lambda_b^0 \to \Lambda_c (2860)^+/\Lambda_c(2625)^+\ell^-\overline{\nu}_\ell$ within QCD light-cone sum rules},
author = {Hui-Hui Duan and Jia-Bao Feng and Feng-Mei Liu and Qin Chang},
journal= {arXiv preprint arXiv:2605.23716},
year = {2026}
}