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Título : The lightest Higgs mass in supersymmetric models with extra dimensions
Autor : Delgado, Antonio; Quirós, Mariano
Palabras clave : High Energy Physics
Phenomenology
Fecha de publicación : 13-abr-2000
Citación : Phys.Lett. B484 (2000) 355-361
arXiv:hep-ph/0004124v1
Resumen: In the four-dimensional supersymmetric standard model extended with gauge singlets the lightest Higgs boson mass, $M_H$, has an important contribution proportional to the squared of the superpotential coupling $\lambda$ of singlets to Higgs fields, $\lambda SH_1\cdot H_2$. The requirement of perturbativity up to the unification scale yields an upper bound on $M_H\sim 140$ GeV. In extensions to theories with (longitudinal) extra dimensions at the TeV where such coupling exists and massive Kaluza-Klein states fall into N=2 representations, if either of the Higgs or singlet fields live in the bulk of the extra dimensions, the $\beta$-function of $\lambda$ is suppressed due to the absence of anomalous dimension of hypermultiplets to leading order. This implies a slower running of $\lambda$ and an enhancement of its low energy value. The $M_H$ upper bound increases to values $M_H\lesssim 165$ GeV.
URI : http://hdl.handle.net/10261/2588
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