Fermion mass hierarchy based onN=8 supergravity |
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Authors: | M Bando Y Sato S Uehara |
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Institution: | 1. Department of Physics, Kyoto University, 606, Kyoto, Japan
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Abstract: | A possible mechanism is proposed to realize fermion mass hierarchy based on the superunification model of Ellis et al. In addition to the usual fermion (F)—Higgs (B) coupling, “non-renormalizable” interactions such as(1/(M p ) n )(F) 2 (B) n+1 are introduced. It is assumed that three kinds of Higgs scalars respectively develop v.e.v. of orderM P ,M X andM W , corresponding to the symmetry breaking pattern ofSU(8)→SU(5)→SU(3)×SU(3)×U(1)→SU(3)×U(1). As a result, fermions acquire their masses of orderM w ,M W (M X /M P) andM W (M X /M P )2. An example of the model is presented which shows nice feature of hierarchical mass patterns. |
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