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Neutrino Oscillations Induced by Two-loop Radiative Mechanism

  • TOKAI-HEP/TH-0001 (June, 2000) in Phys. Lett. B 490 No.3-4 (2000) 236-241 (Received date: June, 2000) with Mr. T. Kitabayashi.

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Two-loop radiative mechanism, when combined with an U(1)L' symmetry generated by - - (= * ) , is shown to provide an estimate of , where measures the U(1)L'-breaking. Since 3.5x , we find that , which will fall into the allowed region of the LOW solution to the solar neutrino problem for 0.1.

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