Higgs mass implications on the stability of the electroweak vacuum
By J. Elias-Miró, J. Espinosa, G. Giudice, G. Isidori, A. Riotto, Alessandro Strumia. 2011
553 citations recorded by the source corpus.
Abstract We update instability and metastability bounds of the Standard Model electroweak vacuum in view of the recent ATLAS and CMS Higgs results. For a Higgs mass in the range 124–126 GeV, and for the current central values of the top mass and strong coupling constant, the Higgs potential develops an instability around 10 11 GeV, with a lifetime much longer than the age of the Universe. However, taking into account theoretical and experimental errors, stability up to the Planck scale cannot be excluded. Stability at finite temperature implies an upper bound on the reheat temperature after inflation, which depends critically on the precise values of the Higgs and top masses. A Higgs mass in the range 124–126 GeV is compatible with very high values of the reheating temperature, without conflict with mechanisms of baryogenesis such as leptogenesis. We derive an upper bound on the mass of heavy right-handed neutrinos by requiring that their Yukawa couplings do not destabilize the Higgs potential.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/f8d14cae2740dd0adb6f5892be4439e330bbd0e3
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In Astronomy and Astrophysics
- Alessandro Strumia
- G. Giudice
- J. Espinosa
- A. Salvio
- L. Senatore
- A. Riotto
- J. Elias-Miró
- Hyun Min Lee
In Nuclear and High Energy Physics
Citations in the corpus
- Higgs mass and vacuum stability in the Standard Model at NNLO (2012, methodology): “However, as pointed out in [18], the most important missing NNLO piece for the vacuum stability analysis are the two-loop threshold corrections to λ at the weak scale due to QCD and top Yukawa interactions, because such couplings are sizable at low energy.”
- Flavor structures of charged fermions and massive neutrinos (2019, background): “For the sake of illustration, here we simply suggest the following preliminary measures of weak and strong CP-violating effects in the quark sector of the SM [254] 12: CPweak ∼ 1 Λ6EW ( mu − mc ) ( mc − mt ) ( mt − mu ) ( md − ms ) ( ms − mb ) ( mb − md )Jq ∼ 10−13 , CPstrong ∼ 1 Λ6QCD mumcmtmdmsmb ”
- Stabilization of the electroweak vacuum by a scalar threshold effect (2012, methodology): “conditions on these corrected couplings (the shift in the instability scale can be up to one order of magnitude; see [17–19] for further details).”