Decomposition matrices for $d$-Harish-Chandra series: the exceptional rank two cases.

link: http://arxiv.org/abs/1008.3413
Abstract

We calculate all decomposition matrices of the cyclotomic Hecke algebras of
the rank 2 exceptional complex reflection groups in characteristic 0. We prove
the existence of canonical basic sets in the sense of Geck-Rouquier and show
that all modular irreducible representations can be lifted to the ordinary
ones.