On stability of the electroweak vacuum and the Higgs portal
By O. Lebedev. 2012
205 citations recorded by the source corpus.
In the Standard Model (SM), the Higgs mass around 125 GeV implies that the electroweak vacuum is metastable since the quartic Higgs coupling turns negative at high energies. I point out that a tiny mixing of the Higgs with a heavy singlet can make the electroweak vacuum completely stable. This is due to a tree level correction to the Higgs mass-coupling relation, which survives in the zero-mixing/heavy-singlet limit. Such a situation is experimentally indistinguishable from the SM, unless the Higgs self-coupling can be measured. As a result, Higgs inflation and its variants can still be viable.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/274cc55458732cd4e7cb4be4006aa1d11fb3500e
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In Astronomy and Astrophysics
- J. Redondo
- A. Ringwald
- A. Salvio
- Alessandro Strumia
- A. Falkowski
- G. Giudice
- G. Ballesteros
- C. Tamarit
In Nuclear and High Energy Physics
- Alessandro Strumia
- J. Redondo
- A. Ringwald
- A. Salvio
- G. Giudice
- Jure Zupan
- A. Falkowski
- Pier Paolo Giardino
Citations in the corpus
- Standard Model—axion—seesaw—Higgs portal inflation. Five problems of particle physics and cosmology solved in one stroke (2016, background): “This threshold stabilisation mechanism can make the potential of the model absolutely stable up to the Planck mass [18, 19] and is especially effective for small λσ, which is precisely the situation we will be interested in.”
- Investigating the near-criticality of the Higgs boson (2013, background): “The discovery of the SM near-criticality has led to many theoretical speculations [8, 31–55, 120, 121].”
- Higgs portal, fermionic dark matter, and a Standard Model like Higgs at 125 GeV (2012, background): “An interesting possibility is that the coupling of dark and visible sectors is through a Higgs portal [1–18].”
- A second Higgs from the Higgs portal (2015, methodology): “Note that we are using a different convention for θ compared to that of [13, 24].”