$\lambda {\varphi }^4$ model and Higgs mass in standard model calculated by Gaussian effective potential approach with a new regularization-renormalization method

Abstract

Basing on new regularization-renormalization method, the $\lambda {\varphi }^4$ model used in standard model is studied both perturbatively and nonperturbatively (by Gaussian effective potential). The invariant property of two mass scales is stressed and the existence of a (Landau) pole is emphasized. Then after coupling with the SU(2)$\times$U(1) gauge fields, the Higgs mass in standard model (SM) can be calculated as $m_H\approx$138GeV. The critical temperature ($T_c$) for restoration of symmetry of Higgs field, the critical energy scale (${\mu }_c$, the maximum energy scale under which the lower excitation sector of the GEP is valid) and the maximum energy scale (${\mu }_{max}$, at which the symmetry of the Higgs field is restored) in the standard model are $T_c\approx$476 GeV, ${\mu }_c\approx 0.547\times 10^{15}$GeV and ${\mu }_{\max }\approx 0.873\times 10^{15}$ GeVv respectively.

12 pages, LaTex, no figure

References in corpus (1)

• New Regularization-Renormalization Method in Quantum Electrodynamics and Qualitative Calculation on Lamb Shift

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