Original scientific paper
New results on the μ+ → e+ γ decay from the meg experiment
A. Papa
; Paul Scherrer Institut, Villigen, Switzerland
Abstract
(on behalf of the MEG collaboration) The aim of the MEG experiment is to measure the branching ratio of the rare muon decay BR = µ + → e +γ / µ+ → e+νeνµ at a sensitivity of ≈ 10−13. To reach this goal, the experiment must use the most intense continuous muon beam available (≈ 108µ/s) and obtain the highest energy, time and space resolutions, today reachable. MEG started to collect data at the end of 2008. During 2009 a large part of the data taking time was devoted to calibration measurements and detector performance optimizations; a new physics data sample was collected at the end of this year in 1.5 months of acquisition time. A description of the main features of each subdetector and of the measured resolutions are given and the results of the search for µ + → e +γ decay based on the 2009 data sample are presented.
Keywords
lepton flavour violation; MEG experiment; µ+ → e+γ
Hrčak ID:
304632
URI
Publication date:
1.3.2011.
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