Eur. Phys. J. C (2007) 52: 477-485
https://doi.org/10.1140/epjc/s10052-007-0383-7

Special Article - Young Scientists Paper

Search for the lepton flavour-violating decay μ→eγ

The MEG experiment probes GUT scale physics with MeV particles

Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

^* e-mail: pekochan@icepp.s.u-tokyo.ac.jp

Received: 25 June 2007
Revised: 18 July 2007
Published online: 17 August 2007

Abstract

I introduce the upcoming MEG experiment, which will search for the rare decay μ→eγ down to the branching ratio of 10^-13. In order to suppress the background and achieve this unprecedented sensitivity, a great deal of thought went into designing this experiment. Here, I describe the essential components of this experiment, the beam line, the positron spectrometer, and the liquid xenon γ-ray detector.