Stability and UV completion of the Standard Model

Branchina, Vincenzo; Messina, Emanuele

doi:10.48550/arxiv.1507.08812

Cited by 17 publications

(31 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inflation near the maximum will depend on the details of the RGE evolution and thus on the UV completion. The perturbative expansion used in section 3.1 does not capture this case, and we used a numerical analysis to also study the possibility of hilltop inflation, where we parameterized the threshold corrections by a specific set of higher order operators in the Lagrangian (9). Our numerical analysis confirms our analytical results for inflation on the flat plateau of the potential.…”

Section: Discussionsupporting

confidence: 61%

“…We conclude with a small remark. It is well known that for the central values of the electroweak scale top and Higgs mass the Higgs potential becomes unstable at φ ∼ 10 10 GeV [6,7,8,9,10,11,12], well before the potential flattens in Higgs inflation. The top/Higgs mass values separating a stable from an unstable Standard Model Higgs potential are close to those separating Higgs inflation from models where inflation is not possible.…”

Section: Discussionmentioning

confidence: 99%

“…First, including the running of couplings, the potential may become unstable at energy scales below the inflationary scale. For the best fit values of the top and Higgs mass this indeed happens, but it should be noted that vacuum stability of the SM up to the Planck scale is only excluded at the 2-3σ level [6,7,8,9,10,11,12]. Furthermore, with extra matter, e.g.…”

Section: Introductionmentioning

confidence: 87%

“…If they only affect the potential via modifications of the running, our results apply: (except from some possible fine-tuned cases near a maximum) inflation takes place on the plateau and the observables have universal values. Our choice of higher order terms in the Lagrangian (9) with c max ∼ 10 can be viewed as a (specific) parameterization of the kick in λ due to all possible threshold corrections.…”

Section: Inflation Near the Maximummentioning

confidence: 99%

See 3 more Smart Citations

UV (in)sensitivity of Higgs inflation

Fumagalli

Postma

2016

J. High Energ. Phys.

112

View full text Add to dashboard Cite

The predictions of Standard Model Higgs inflation are in excellent agreement with the Planck data, without the need for new fields. However, consistency of the theory requires the presence of (unknown) threshold corrections. These modify the running of the couplings, and thereby change the shape of the inflationary potential. This raises the question how sensitive the CMB parameters are to the UV completion. We show that, due to a precise cancellation, the inflationary predictions are almost unaffected. This implies in general that one cannot relate the spectral index and tensor-to-scalar ratio to the precise top and Higgs mass measurements at the LHC, nor can one probe effects of UV physics on the running.

show abstract

Section: Discussionsupporting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

Section: Inflation Near the Maximummentioning

confidence: 99%

See 2 more Smart Citations

UV (in)sensitivity of Higgs inflation

Fumagalli

Postma

2016

J. High Energ. Phys.

112

View full text Add to dashboard Cite

show abstract

“…The validity of the analysis in Refs. [1,2] and the corresponding conclusions has been questioned in a series of recent papers [6,7,8,9]. There, it has been shown that non-standard physics modifying the shape of the Higgs potential at energy scales of the order of the Planck mass can sizeably affect the tunnelling rate of the electroweak vacuum.…”

Section: Introductionmentioning

confidence: 99%

Stability of the electroweak ground state in the Standard Model and its extensions

2016

View full text Add to dashboard Cite

We review the formalism by which the tunnelling probability of an unstable ground state can be computed in quantum field theory, with special reference to the Standard Model of electroweak interactions. We describe in some detail the approximations implicitly adopted in such calculation. Particular attention is devoted to the role of scale invariance, and to the different implications of scale-invariance violations due to quantum effects and possible new degrees of freedom. We show that new interactions characterized by a new energy scale, close to the Planck mass, do not invalidate the main conclusions about the stability of the Standard Model ground state derived in absence of such terms

show abstract

Triple Higgs boson production at a 100 TeV proton-proton collider

Papaefstathiou

Sakurai

2016

J. High Energ. Phys.

View full text Add to dashboard Cite

We consider triple Higgs boson production at a future 100 TeV proton-proton collider. We perform a survey of viable final states and compare and contrast triple production to Higgs boson pair production. Focussing on the hhh → (bb)(bb)(γγ) final state, we construct a baseline analysis for the Standard Model scenario and simple deformations, demonstrating that the process merits investigation in the high-luminosity phase of the future collider as a new probe of the self-coupling sector of the Higgs boson.

show abstract

Stability and UV completion of the Standard Model

Cited by 17 publications

References 0 publications

UV (in)sensitivity of Higgs inflation

UV (in)sensitivity of Higgs inflation

Stability of the electroweak ground state in the Standard Model and its extensions

Triple Higgs boson production at a 100 TeV proton-proton collider

Contact Info

Product

Resources

About