The probable fate of the Standard Model
By J. Ellis, J. R. Espinosa, G. Giudice, Andreas Hoecker, A. Riotto. 2009
259 citations recorded by the source corpus.
Extrapolating the Standard Model to high scales using the renormalisation group, three possibilities arise, depending on the mass of the Higgs boson: if the Higgs mass is large enough the Higgs self-coupling may blow up, entailing some new non-perturbative dynamics; if the Higgs mass is small the effective potential of the Standard Model may reveal an instability; or the Standard Model may survive all the way to the Planck scale for an intermediate range of Higgs masses. This latter case does not necessarily require stability at all times, but includes the possibility of a metastable vacuum which has not yet decayed. We evaluate the relative likelihoods of these possibilities, on the basis of a global fit to the Standard Model made using the Gfitter package. This uses the information about the Higgs mass available directly from Higgs searches at LEP and now the Tevatron, and indirectly from precision electroweak data. We find that the ‘blow-up’ scenario is disfavoured at the 99% confidence level (96% without the Tevatron exclusion), whereas the ‘survival’ and possible ‘metastable’ scenarios remain plausible. A future measurement of the mass of the Higgs boson could reveal the fate of the Standard Model.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b58262b1dd078feea07850380662701efb0e6f67
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In Astronomy and Astrophysics
- Alessandro Strumia
- Fedor Bezrukov
- M. Shaposhnikov
- A. Salvio
- G. Giudice
- J. Espinosa
- J. Elias-Miró
- Bernd A. Kniehl
In Nuclear and High Energy Physics
- Alessandro Strumia
- G. Giudice
- Fedor Bezrukov
- M. Shaposhnikov
- A. Salvio
- J. Espinosa
- J. Elias-Miró
- A. Riotto
Citations in the corpus
- The cosmological Higgstory of the vacuum instability (2015, background): “the edge between stability and instability of the electroweak vacuum [1–3] (see [4–13] for earlier analyses).”
- Investigating the near-criticality of the Higgs boson (2013, background): “Remarkably, in the context of the SM the measured value of Mh is special because it corresponds to a near-critical situation in which the Higgs vacuum does not reside in the configuration of minimal energy, but in a metastable state close to a phase transition [8] (for earlier considerations see [9–”
- Stabilization of the electroweak vacuum by a scalar threshold effect (2012, unknown): “[3–20]).”
- The Higgs-boson lineshape☆ (2011, background): “This simple fact raises the following question: what is the physical meaning of an heavy Higgs boson search? We have the usual and well-known considerations [5]: a Higgs boson above 600 GeV requires new physics at 1 TeV , argument based on partial-wave unitarity [45,46] (which should not be taken qu”
- 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).”
- Higgs boson mass and new physics (2012, background): “2 A somewhat later papers [17, 18, 23] contains exactly the same numbers for M stability min (note, however, that the theoretical uncertainties were not discussed in [23]).”