Study of FCNC mediated Z boson effectin the semileptonic rare baryonic decays Λ b → Λl + l -A. K. Giri and R. MohantaEur. Phys. J. C, 45 1 (2006) 151-158DOI: https://doi.org/10.1140/epjc/s2005-02407-6