Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-01-20
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 4 figures, Submitted to Mod. Phys. Lett
Scientific paper
We investigate the lepton flavor violation (LFV) decays, $\tau\to l\gamma$ ($l=\mu, e$) and $\mu\to e\gamma$, and the newly observed muon $g-2$ anomaly in the framwork of a squential fourth generation model with a heavy fourth neutrino, $\nu'$. By using the recent experimental bounds, we take the constraints of the $4\times 4$ leptonic mixing matrix element factors, $|V_{1\nu'} V_{2\nu'}|^2$, $|V_{1\nu'} V_{3\nu'}|^2 $ and $|V_{3\nu'} V_{2\nu'}|^2$. We find that LFV decays and $g_\mu -2$ can exclude most of the parameter space of the 4th generation neutrino mass $m_{\nu'}$ and give stringent constraints on the existence of the fourth generation.
Feng T. F.
Huo Wu-Jun
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