An advanced precision analysis of the SM vacuum stability

Abstract

The talk is devoted to the problem of stability of the Standard Model vacuum. The effective potential for the Higgs field, which can potentialy exhibit additional, deeper minimum, is considered as a convenient tool for addressing the problem. Different methods and approximations used to calculate the potential are considered. Special attention is paid to the renomalization-group approach that allows one to carry out three-loop analysis of the problem. By means of an explicit gauge-independent procedure the absolute stability bounds on the observed Higgs and top-quark masses are derived. The importance of high-order corrections is demonstrated. In addition, potential metastablity of the SM is discussed together with modifications of the analysis due to some New Physics.

Comments: 11 pages, 3 figures, abstract both in Russian and English, submitted to Proceedings of the International Session-Conference of SNP PSD RAS "Physics of Fundamental Interactions", JINR, Dubna, April, 2016