On the metastability of the standard model vacuum

By G. Isidori, G. Ridolfi, Alessandro Strumia. 2001

418 citations recorded by the source corpus.

If the Higgs mass mH 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 mH 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 mH = 115 GeV, the Higgs potential develops an instability below the Planck scale for mt > (166±2) GeV, but the electroweak vacuum is sufficiently long-lived formt < (175 ± 2) GeV.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d34282498cb72afa708ac1cbc4ba8b43e21c9864

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In Nuclear and High Energy Physics

Citations in the corpus

Higgs mass and vacuum stability in the Standard Model at NNLO (2012, background): “J H E P 0 8 ( 2 0 1 2 ) 0 9 8 condition λ(Λ) ≥ 0 for any value Λ up to the Planck scale (as for instance done in [11]).”
Investigating the near-criticality of the Higgs boson (2013, background): “[28].”
Predictive Landscapes and New Physics at a TeV (2005, methodology): “[51] for a disucssion this in the context of vacuum stability bounds on the Higgs mass in the Standard Model).”
Stabilization of the electroweak vacuum by a scalar threshold effect (2012, neutral): “[3–20]).”
Vacuum stability, perturbativity, and scalar singlet dark matter (2009, background): “[32, 33] have shown that allowing for a sufficiently long-lived electroweak vacuum can weaken the lower bounds on the Higgs mass by as much as ∼ 25GeV (this change was roughly uniform for cutoff scales 10(10)GeV ≤ Λ ≤ 10(19)GeV).”