Cosmological implications of the Higgs mass measurement

By J. Espinosa, G. Giudice, A. Riotto. 2007

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We assume the validity of the standard model up to an arbitrary high-energy scale and discuss what information on the early stages of the Universe can be extracted from a measurement of the Higgs mass. For , the Higgs potential can develop an instability at large-field values. From the absence of excessive thermal Higgs field fluctuations we derive a bound on the reheat temperature after inflation as a function of the Higgs and top masses. Then we discuss the interplay between the quantum Higgs fluctuations generated during the primordial stage of inflation and the cosmological perturbations, in the context of landscape scenarios in which the inflationary parameters scan. We show that, within the large-field models of inflation, it is highly improbable to obtain the observed cosmological perturbations in a Universe with a light Higgs. Moreover, independently of the inflationary model, the detection of primordial tensor perturbations through the B mode of CMB polarization and the discovery of a light Higgs can simultaneously occur only with exponentially small probability, unless there is new physics beyond the standard model.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/a26d848c5c97d73803cb2d53fa9f7a6bed972066

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Citations in the corpus

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, background): “One can view this result as an opportunity to learn new information about the early universe through collider experiments [21], or as the need for a UV modification of the SM.”
Higgs Inflation (2018, background): “Although a precise measurement of the inflationary observables could be understood as an interesting consistency check between cosmological observations and particle physics experiments [18, 52, 70–76], the low- to high-energy connection is subject to unavoidable ambiguities related to the non-renor”
Higgs boson mass and new physics (2012, methodology): “5) of [10] error +0.”
The cosmological Higgstory of the vacuum instability (2015, methodology): “about electroweak-vacuum decay from thermal or inflationary Higgs fluctuations have already been studied in the literature [14–24], but here we give a comprehensive description of the phenomenon and reach new conclusions.”
Running inflation in the Standard Model (2008, background): “Cosmological constraints only require metastability on the lifetime of the universe, which places the constraintmh & 105 GeV [23].”
Inflationary paradigm after Planck 2013 (2013, background): “) Nonminimal couplings of the Higgs field, either to gravity [51] or to the inflaton [51,52], can also obviate the problem.”
A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, background): “Though the life-time of the SM vacuum exceeds the age of the Universe by many orders of magnitude [789], it may happen that the Universe”