Vacuum (meta)stability beyond the MSSM

Kfir Blum*, Cédric Delaunay, Yonit Hochberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We study the stability of the Higgs potential in the framework of the effective Lagrangian beyond the minimal supersymmetric standard model (MSSM). While the leading nonrenormalizable operators can shift the Higgs boson mass above the experimental bound, they also tend to render the scalar potential unbounded from below. The destabilization is correlated with the Higgs mass increase, so that if quantum corrections are small the problem is severe. We show that a supersymmetric subleading correction stabilizes the potential within the domain of validity of the effective theory. Constraints on MSSM parameters as well as on higher dimensional operators are derived, ensuring that our vacuum has a lifetime longer than the present age of the Universe. In addition we show that when effective operators are responsible for evading the LEP bound, stability constraints imply an upper bound on the scale of new physics in the few TeV range.

Original languageAmerican English
Article number075004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume80
Issue number7
DOIs
StatePublished - 2 Oct 2009
Externally publishedYes

Fingerprint

Dive into the research topics of 'Vacuum (meta)stability beyond the MSSM'. Together they form a unique fingerprint.

Cite this