Renormalization group fixed points and the Higgs boson spectrum

Hill, Christopher T. ; Leung, Chung Ngoc ; Rao, Sumathi (1985) Renormalization group fixed points and the Higgs boson spectrum Nuclear Physics B, 262 (3). pp. 517-537. ISSN 05503213

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We study numerically the renormalization group equations for the Higgs potential of the two-doublet model assuming perturbative unification and sufficiently large initial quartic and Higgs-Yukawa couplings such that the full nonlinearities interplay. We obtain predictions for the physical Higgs boson spectrum in the two-doublet model up to systematic differences in fermion coupling schemes. Unambiguous predictions emerge only when there exists a heavy generation in which quarks couple to both doublets. In other cases we find that the potential can become quartically unstable at low energies for arbitrary initial stable values of the coupling constants.

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ID Code:109552
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