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Natural Islands for a 125 GeV Higgs in the scale-invariant NMSSM · Around

2012

Natural Islands for a 125 GeV Higgs in the scale-invariant NMSSM

Agashe, Kaustubh, Cui, Yanou, Franceschini, Roberto

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We study whether a 125 GeV standard model-like Higgs boson can be accommodated within the scale-invariant NMSSM in a way that is natural in all respects, i.e., not only is the stop mass and hence its loop contribution to Higgs mass of natural size, but we do not allow significant tuning of NMSSM parameters as well.

We pursue as much as possible an analytic approach which gives clear insights on various ways to accommodate such a Higgs mass, while conducting complementary numerical analyses.
We consider both scenarios with singlet-like state being heavier and lighter than SM-like Higgs.
With A-terms being small, we find for the NMSSM to be perturbative up to GUT scale, it is not possible to get 125 GeV Higgs mass, which is true even if we tune parameters of NMSSM.

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Similar

S. Schael, et al., “Search for neutral MSSM Higgs bosons at LEP,” European Physical Journal C
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U. Ellwanger and C. Hugonie, “The Upper Bound on the Lightest Higgs Mass in the NMSSM Revisited,” Modern Physics Letters A
2007
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2007
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R. Barbieri, D. Pappadopulo, V. S. Rychkov, L. J. Hall, and A. Y. Papaioannou, “An alternative NMSSM phenomenology with manifest perturbative unification,” Journal of High Energy Physics
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Then

C. Wymant, “Optimising Stop Naturalness,” ArXiv e-prints
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E. Hardy, J. March-Russell, and J. Unwin, “Precision Unification in λ \lambda SUSY with a 125 GeV Higgs,” ArXiv e-prints
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A. Arvanitaki and G. Villadoro, “A non Standard Model Higgs at the LHC as a sign of naturalness,” Journal of High Energy Physics
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U. Ellwanger, “A Higgs boson near 125 GeV with enhanced di-photon signal in the NMSSM,” Journal of High Energy Physics
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