Trinification can explain the di-photon and di-boson LHC anomalies

Abstract

LHC data show a diphoton excess at 750 GeV and a less significant diboson excess around 1.9 TeV. We propose trinification as a common source of both anomalies. The 1.9 TeV excess can be produced by the lightest extra vector: a W ± R with a gauge coupling g R ≈ 0.44 that does not decay into leptons. Furthermore, trinification predicts extra scalars. One of them can reproduce the γγ excess while satisfying constraints from all other channels, given the specific set of extra fermions predicted by trinification.

Scale hierarchies, symmetry breaking, and particle spectra in SU(3)-family extended SUSY trinification

“…These approaches typically require a significant fine-tuning in high-scale parameter space (especially, in the Yukawa sector) [26]. Otherwise, they exhibit phenomenological issues with proton stability [15,21,26] and with a large amount of un-observed light states [12,20,30,31,34,38]. Despite continuous progress, the SM-like EFTs originating from T-GUTs still remain underdeveloped in comparison to other GUT models such as SU (5), SO (10) or even E 6 (see e.g.…”

On the maximal diphoton width

“…In the scalar case, the loop that mediates S → γγ can be enhanced by a large cubic κS|X| 2 [9][10][11]. At first sight, this presents two possible advantages.…”

The Higgs of the Higgs and the diphoton channel

“…2 1 Furthermore [71] also contain some explicit mass term. The model in [73,74] can be extrapolated up to infinite energy, but it employs explicit mass terms. It is possible that these mass terms could be generated at a scale much higher than the weak scale.…”