Minimal Coleman-Weinberg theory explains the diphoton excess

Antipin, Oleg; Mojaza, Matin; Sannino, Francesco

doi:10.1103/physrevd.93.115007

Cited by 23 publications

(3 citation statements)

References 49 publications

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“…In supersymmetry, the scalar partner of the goldstino could provide an explanation to the diphoton signal [97,147,167,335]. Other ideas, slightly more exotic, include: a model with a space-time varying electromagnetic coupling constant [135], Gluinonia [337], Squarkonium/Diquarkonium [299], flavons [244], axions in various incarnations [8,24,63,246,274,336], a natural Coleman-Weinberg theory [22,307], radiative neutrino mass models [264,325,327], and string-inspired models [19,132,188,240,254].…”

Section: Modelsmentioning

confidence: 99%

Precision tools and models to narrow in on the 750 GeV diphoton resonance

et al. 2016

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The hints for a new resonance at 750 GeV from ATLAS and CMS have triggered a significant amount of attention. Since the simplest extensions of the standard model cannot accommodate the observation, many alternatives have been considered to explain the excess. Here we focus on several proposed renormalisable weakly-coupled models and revisit results given in the literature. We point out that physically important subtleties are often missed or neglected. To facilitate the study of the excess we have created a collection of 40 model files, selected from recent literature, for the Mathematica package SARAH. With SARAH one can generate files to perform numerical studies using the tailormade spectrum generators FlexibleSUSY and SPheno. These have been extended to automatically include crucial higher order corrections to the diphoton and digluon decay rates for both CP-even and CP-odd scalars. Additionally, we have extended the UFO and CalcHep interfaces of SARAH, a

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Section: Modelsmentioning

confidence: 99%

Precision tools and models to narrow in on the 750 GeV diphoton resonance

et al. 2016

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“…References [71,72] tried to incorporate the diphoton hinted by ATLAS and CMS in the weakly-coupled framework; however, in both cases couplings are so large that the attempted models hit Landau poles just above the weak scale, such that no hierarchy is dynamically generated. 1 In section 2 we present weakly-coupled dimensionless models where is the field that dynamically generates the weak scale, while running down from the Planck scale.…”

Section: Jhep07(2016)101mentioning

confidence: 99%

The Higgs of the Higgs and the diphoton channel

Kannike

Pelaggi

Salvio

et al. 2016

J. High Energ. Phys.

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LHC results do not confirm conventional natural solutions to the Higgs mass hierarchy problem, motivating alternative interpretations where a hierarchically small weak scale is generated from a dimension-less quantum dynamics. We propose weakly and strongly-coupled models where the field that breaks classical scale invariance giving mass to itself and to the Higgs is identified with a possible new resonance within the LHC reach. As an example, we identify such resonance with the 750 GeV diphoton excess recently reported by ATLAS and CMS. Such models can be extrapolated up to the Planck scale, provide Dark Matter candidates and eliminate the SM vacuum instability.

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“…Though the global significance of this excess is

< 3 σ

, it is interesting to ask whether there are simple models that could explain the excess. Many models have been proposed that can account for the excess. (For an earlier study, see ).…”

Section: Introductionmentioning

confidence: 99%

String consistency, heavy exotics, and the 750 GeV diphoton excess at the LHC

Cvetič

Halverson

Langacker

2016

Fortschritte der Physik

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String consistency conditions are stronger than anomaly cancellation and can require the addition of exotics in the visible sector. We study such exotics and demonstrate that they may account for the modest excess at 750 GeV in recent diphoton resonance searches performed by the ATLAS and CMS collaborations. In a previous analysis of type II MSSM D-brane quivers we systematically added up to five exotics for the sake of satisfying string consistency conditions. Using this dataset, we demonstrate that 89780 of the 89964 quivers have exotics, 78155 of which include singlets that may couple to MSSM or exotic multiplets with coupling structures governed by U (1) symmetries that are often anomalous. We demonstrate that certain sets of exotics are far preferred over others and study the structure of singlet couplings to heavy exotics carrying standard model charges. Typical possibilities include singlets that may decay to vector-like quarks and / or vectorlike leptons and subsequently to two photons. We show that a narrow width diphoton excess can be accounted for while evading existing bounds if multiple exotics are added, with vector-like leptons of mass M L 375 GeV and vector-like quarks with masses up to 3 TeV. However, a large width (Γ/M ∼ 0.06), as suggested by the ATLAS data, cannot be easily accommodated in this framework. Renormalization group equations with GUTscale boundary conditions show that these supersymmetric models are perturbative and stable. Type IIA compactifications on toroidal orbifolds allow for O(10) Yukawa couplings in the ultraviolet. We also discuss the possibility of accounting for the diphoton excess in a low string scale scenario via the decay of string axions.

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Minimal Coleman-Weinberg theory explains the diphoton excess

Cited by 23 publications

References 49 publications

Precision tools and models to narrow in on the 750 GeV diphoton resonance

Precision tools and models to narrow in on the 750 GeV diphoton resonance

The Higgs of the Higgs and the diphoton channel

String consistency, heavy exotics, and the 750 GeV diphoton excess at the LHC

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