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Prog. Theor. Phys. Vol. 64 No. 2 (1980) pp. 606-618

Natural Explanation for the Smallness of m_u, m_d, m_e and θ_c in the SU(2) ×U(1) Gauge Model

Masayoshi Murayama and Noriyasu Ohtsubo^*

Department of Physics, Kanazawa University, Kanazawa 920
^*Department of Physics, Kanazawa Institute of Technology, Ishikawa 921

(Received February 28, 1980)

Abstract:

Discrete symmetries which guarantee the natural vanishing of masses of first generation fermions and Cabibbo angle in the zeroth order are discussed in the framework of the standard SU(2) ×U(1) gauge model. Then a model with specific discrete symmetries is presented. The model explains not only the approximate chiral SU(2)_L ×SU(2)_R invariance but the smallness of electron mass and Cabibbo angle.

URL : http://ptp.ipap.jp/link?PTP/64/606/
DOI : 10.1143/PTP.64.606

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