Abstract
Charged lepton flavor violating (CLFV) process is predicted to be out of experimental reach by the Standard Model of elementary particle physics (SM). However, many models of the new physics beyond the SM predicts that it is just below the current experimental limit. COMET searches for one of the CLFV process, mu-e conversion in a nuclear field, improving the sensitivity by a factor of approximately [Formula: see text] for Phase-I and [Formula: see text] for Phase-II experiment from a past experiment.
Highlights
Charged lepton is the only fundamental fermion whose flavor changing phenomena (CLFV, Charged Lepton Flavor Violation) are not yet discovered
We aim to search for the mu-e conversion with a sensitivity of O(10−17), which corresponds to an improvement of the sensitivity by a factor of 104 from the current experimental limit
We search for mu-e conversion with these detectors with the sensitivity of O(10−15), which corresponds to an improvement of the sensitivity by a factor of 102 from the current experimental limit
Summary
Charged lepton is the only fundamental fermion whose flavor changing phenomena (CLFV, Charged Lepton Flavor Violation) are not yet discovered. The CLFV processes are forbidden in the Standard Model (SM) of the elementary particle physics and are predicted to be out of the experimental reach even taking neutrino oscillations into account. This means that the discovery of it would be a clear signal of the physics beyond the SM and many experiments have been trying to find it in a variety of channels. We observe muon decay in orbit (DIO) (μ− + (A, Z) → e− + νμ + νe + (A, Z) or muon capture This is an Open Access article published by World Scientific Publishing Company. We selected Al for the target material, which makes the lifetime of the muonic atom to be approximately 0.9 μs
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