Rare decays of Λ b →Λ+γ and Λ b →Λ+l + l − in the light-cone sum rulesYu-Ming Wang, Ying Li and Cai-Dian LüEur. Phys. J. C, 59 4 (2009) 861-882DOI: https://doi.org/10.1140/epjc/s10052-008-0846-5