Rare decays of Λ b →Λ γ and Λ b →Λ l + l − in universal extra-dimension modelYu-Ming Wang, M. Jamil Aslam and Cai-Dian LüEur. Phys. J. C, 59 4 (2009) 847-860DOI: https://doi.org/10.1140/epjc/s10052-008-0835-8