2015/12/31 by Oleg Antipin, Matin Mojaza, Francesco Sannino
Mathematics · Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Fermion #Hierarchy problem #Higgs boson #Higgs field #Higgs mechanism #Large Hadron Collider #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Scalar (mathematics) #Theoretical physics #hep-ph
paper · pdf · doi:10.1103/physrevd.93.115007
published as Phys. Rev. D 93, 115007 (2016) · Discussion on the perturbative limits of the model is added, Fig.1 updated and new Fig.2 is added; References updated
arxiv created 2016/04/11 · openalex publication_date 2016/06/06 · arxiv updated 2016/06/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We replace the standard Higgs-mechanism by the Coleman-Weinberg mechanism, and investigate its viability through the addition of a new scalar field. As we showed in a previous study, minimal models of this type can alleviate the hierarchy problem of the Higgs-mass through the so-called Veltman conditions. We here extend the previous analysis by taking into account the important difference between running mass and pole mass of the scalar states. We then investigate whether these theories can account for the 750 GeV excess in diphotons observed by the LHC collaborations. New QCD-colored fermions in the TeV mass range coupled to the new scalar state are needed to describe the excess. We further show, by explicit computation of the running of the couplings, that the model is under perturbative control till just above the masses of the heaviest states of the theory. We further suggest related testable signatures and thereby show that the LHC experiments can test these models.