On the metastability of the Standard Model vacuum

2001/04/30 by Gino Isidori, Giovanni Ridolfi, Alessandro Strumia · 54 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0550-3213(01)00302-9

published as Nucl.Phys.B609:387-409,2001 · LaTex 23 pages, 4 eps figures. Misprint in the abstract corrected, reference added

arxiv created 2001/05/31 · openalex publication_date 2001/08/01 · arxiv updated 2010/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

If the Higgs mass m_H is as low as suggested by present experimental information, the Standard Model ground state might not be absolutely stable. We present a detailed analysis of the lower bounds on m_H imposed by the requirement that the electroweak vacuum be sufficiently long-lived. We perform a complete one-loop calculation of the tunnelling probability at zero temperature, and we improve it by means of two-loop renormalization-group equations. We find that, for m_H=115 GeV, the Higgs potential develops an instability below the Planck scale for m_t>(166± 2) GeV, but the electroweak vacuum is sufficiently long-lived for m_t < (175± 2) \GeV.

Citations

• Fate of the false vacuum: Semiclassical theory
• Fate of the false vacuum. II. First quantum corrections

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