New spectra in the HEIDI Higgs models

J. J. van der Bij; B. Pulice

doi:10.1016/j.nuclphysb.2011.07.014

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arXiv · 1104.2062

New spectra in the HEIDI Higgs models

J. J. van der Bij·B. Pulice

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Abstract

We study the so-called HEIDI models, which are renormalizable extensions of the standard model with a higher dimensional scalar singlet field. As an additional parameter we consider a higher-dimensional mixing mass parameter. This leads to enriched possibilities compared to a previous study. We find effective spectral densities of the Higgs propagator, consisting of one, two or no particle peaks, together with a continuum. We compare with the LEP-2 data and determine for which range of the model parameters the data can be described. Assuming two peaks to be present we find for the new mass scale $ν\approx 56\pm12 \gev$, largely independent of the dimension. In the limiting case of $d\rightarrow 6$ and two peaks we find a higher dimensional coupling constant $α_6=0.70 \pm 0.18$, indicative of strong interactions among the higher dimensional fields. The LHC will not be able to study this Higgs field.

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J. J. van der Bij, B. Pulice. 2011-04-11. New spectra in the HEIDI Higgs models. https://doi.org/10.1016/j.nuclphysb.2011.07.014

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