Let
Ff∈Sk(Sp2n(Z)) be the Ikeda lifting of a Hecke eigenform
f∈S2k−n(SL2(Z)) with the normalization
72b3a707" title="Click to view the MathML source">〈Ff,Ff〉=1. Let
E(Z;s) denote the Klingen Eisenstein series. In this paper we verify that
which is predicted by the mass equidistribution conjecture of Cogdell and Luo
[CL].