PHYSICS LETTERS B, vol.657, pp.77-80, 2007 (SCI-Expanded)
Recently H. Georgi has introduced an unparticle U in order to describe the low energy physics of a nontrivial scale invariant sector of an effective theory. In this work we have explored the phenomenology of an unparticle using the lepton flavour violating decay mu(-) -> e(-)e(+)e(-), and found that the branching ratio of this decay is strongly dependent on the scaling dimension. (C) 2007 Elsevier B.V. All rights reserved.