2011/04/11 by J.J. van der Bij, J. J. van der Bij, Beyhan Puliçe +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2011.07.014
published as Nucl.Phys.B853:49-62,2011 · 17 pages, 4 figures
arxiv created 2011/04/11 · openalex publication_date 2011/07/26 · arxiv updated 2011/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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≈ 56±12 \gev, largely independent of the dimension. In the limiting case of d→ 6 and two peaks we find a higher dimensional coupling constant α6=0.70 ± 0.18, indicative of strong interactions among the higher dimensional fields. The LHC will not be able to study this Higgs field.