Abstract
We study μ-e conversion with sequential four generations. A large mass for the fourth generation neutrino can enhance the conversion rate by orders of magnitude. We compare constraints obtained from μ-e conversion using experimental bounds on various nuclei with those from μ→eγ and μ→eēe. We find that the current bound from μ-e conversion with Au puts the most stringent constraint in this model. The relevant flavor changing parameter λ;μe=V*4μVe4 is constrained to be less than 1.6×10-5 for the fourth generation neutrino mass larger than 100 GeV. Implications for future μ-e conversion, μ→eγ and μ→eēe experiments are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 562-566 |
| Number of pages | 5 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 703 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Sep 26 2011 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Deshpande, N. G., Enkhbat, T., Fukuyama, T., He, X. G., Tsai, L. H., & Tsumura, K. (2011). μ-e conversion with four generations. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 703(5), 562-566. https://doi.org/10.1016/j.physletb.2011.08.045