Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-02-20
Phys.Rev.Lett. 87 (2001) 011802; Erratum-ibid. 87 (2001) 159901
Physics
High Energy Physics
High Energy Physics - Phenomenology
Erratum added
Scientific paper
10.1103/PhysRevLett.87.159901
If the generating mechanism for neutrino mass is to account for both the newly observed muon anomalous magnetic moment as well as the present experimental bounds on lepton flavor nonconservation, then the neutrino mass matrix should be almost degenerate and the underlying physics be observable at future colliders. We illustrate this assertion in two specific examples, and show that $\Gamma (\mu \to e \gamma)/m_\mu^5$, $\Gamma (\tau \to e \gamma)/m_\tau^5$, and $\Gamma (\tau \to \mu \gamma) /m_\tau^5$ are in the ratio $(\Delta m^2)_{sol}^2/2$, $(\Delta m^2)_{sol}^2 /2$, and $(\Delta m^2)_{atm}^2$ respectively, where the $\Delta m^2$ parameters are those of solar and atmospheric neutrino oscillations and bimaximal mixing has been assumed.
Ma Ernest
Raidal Martti
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