Abstract
Lepton flavor violation (LFV) research is currently one of the most exciting branches of particle physics. Flavor violating processes, such as μ+ → e+γ and μ+ → e+e−e+, which are strongly suppressed in the Standard Model (SM), are very sensitive to new physics. The MEG experiment and the Mu3e experiment, which search for the μ+ → e+γ and the μ+ → e+e−e+ decay respectively, are two precision physics experiments at the forefront of field. They are housed at the Paul Scherrer Institut (PSI), in Switzerland, which provides the most intense continuous muon beam in the world. A summary of the status of the two experiments is given.
Highlights
The Standard Model supplemented with massive neutrinos (SM) and enriched by the latest discovery of the Higgs-like particle at the Large Hadron Collider (LHC), summarizes our present best knowledge of particle physics
In spite of its extraordinary success and ability to account for a huge quantity of experimental data, there exist both strong theoretical reasons in particle physics and significant observational hints from astro-particle physics for new physics beyond the SM
Amongst others a powerful way is to search for SM forbidden or strongly suppressed processes which can reveal new physics via indirect production of Beyond Standard Model (BSM) particles, strongly enhancing the probability of these processes to occur [1, 2], exploring physics energy scales up to ≈ 104 TeV
Summary
The Standard Model supplemented with massive neutrinos (SM) and enriched by the latest discovery of the Higgs-like particle at the Large Hadron Collider (LHC), summarizes our present best knowledge of particle physics. Flavor physics became one of the most exciting branches of particle physics due to the high sensitivity to new physics in the so called charged lepton flavor violation (cLFV) processes. Rare decay searches require the use of high beam intensities and demand detectors able to work in critically high background environments.
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