μ-e conversion search

The COMET experiment searches for coherent neutrino-less conversion of a muon to an electron, μ^- + N(A,Z) → e^- + N(A,Z), in muonic atoms (μ-e conversion) at a 90% confidence-level sensitivity of B(μ^- + Al → e^- + Al) < 10^-16. The target sensitivity is a factor of about 10,000 better than the present published limit of B(μ^- + Au → e^- + Au) < 7×10^-13. This experiment would provide a very large window on new physics beyond the Standard Mode.