The hierarchy problem of the scalar sector of the standard model is reformulated, emphasizing the role of experimental facts that may suggest the existence of a new physics large mass scale, for instance, indications of the instability of matter or indications in favor of massive neutrinos. In the seesaw model for the neutrino masses a hierarchy problem arises if the mass of the right-handed neutrinos is larger than approximately 10⁷GeV: this problem, and its possible solutions, are discussed.
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Francesco Vissani (1998) studied this question.
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