Radiative corrections to the Higgs potential in the Littlest Higgs ... - Infn

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Radiative corrections to the Higgs potential in the Littlest Higgs ... - Infn

Motivations Little Higgs models One-loop contributions The relevant two-loops contributions. Scalar particles Numerical results a

Higgs

potential in the

LH model

Lourdes

Tabares

Motivations

Little Higgs

models

One-loop

contributions

The relevant

two-loops

contributions.

Scalar

particles

Numerical

results and

discussion

Conclusions

Motivations

In the Standard Model (SM) the fundamental scalar

particles suffer from radiative correction instability in

their masses.

Problem: Little hierarchy problem

The electroweak precision data require

Λ ≥ 10 TeV BUT

Large fine-tuning

m H = m tree + Λ 2 × loops

However, if Λ ∼ 2 TeV no large fine-tuning ⇒ New physics at this scale.

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