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Prog. Theor. Phys. Vol. 92 No. 1 (1994) pp. 153-173

[ Full Text PDF : FREE ACCESS (1849K) ]

How Can We Obtain a Large Majorana-Mass in Calabi-Yau Models?

Naoyuki Haba, Chuichiro Hattori,* Masahisa Matsuda,** Takeo Matsuoka and Daizo Mochinaga

Department of Physics, Nagoya University, Nagoya 464-01
*Department of Physics, Aichi Institute of Technology, Toyota 470-03
**Department of Physics and Astronomy, Aichi University of Education, Kariya 448

(Received March 28, 1994)

Abstract:

In a certain type of Calabi-Yau superstring models it is clarified that the symmetry breaking occurs by stages at two large intermediate energy scales and that two large intermediate scales induce large Majorana-masses of right-handed neutrinos. Peculiar structure of the effective nonrenormalizable interactions is crucial in the models. In this scheme Majorana-masses possibly amount to O(109 ∼10 GeV) and see-saw mechanism is at work for neutrinos. Based on this scheme we propose a viable model which explains the smallness of masses for three kinds of neutrino νe, νµ and ντ. Special forms of the nonrenormalizable interactions can be understood as a consequence of an appropriate discrete symmetry of the compactified manifold.


URL : http://ptp.ipap.jp/link?PTP/92/153/
DOI : 10.1143/PTP.92.153

[ Full Text PDF : FREE ACCESS (1849K) ] Citation:

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Citing Article(s) :

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  6. Progress of Theoretical Physics Vol. 99 No. 5 (1998) pp. 831-842 :
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