High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:2507.3106 [ps, pdf, other]
Title: On the Diphoton Excess
Authors: H. Bardhan
Comments: 11 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this letter, we address the intriguing diphoton excess at run 2. The $\gamma\gamma$ resonance is scrutinized in Seesaw models with heavy scalars. Unsurprisingly, a downside of this model is that it explains the 2 TeV resonance. The $\gamma\gamma$ resonance implies conformal dynamics around 300 GeV. Unfortunately, there is much to be done.

[2]  arXiv:2507.3178 [ps, pdf, other]
Title: Interpretations of the Diphoton Excess in Extensions of Split SUSY Models
Authors: N. Tesi
Comments: 2 pages, typos corrected
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just shown an anomaly in the 13 TeV data. Exotic fermions are added to twin Higgs to account for the diphoton resonance. The $X(750)$ is produced in inelastic scattering and decays to $\gamma\gamma$. Therefore, the resonance couples to $t\bar{t}$, but not to $ZZ$, reducing tension with Run 1. More data should reveal the nature of the $\gamma\gamma$ anomaly.

[3]  arXiv:2507.1421 [ps, pdf, other]
Title: Interpretations of the $\gamma\gamma$ Anomaly in E6
Comments: 28 pages
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

In this paper, we talk about the very recent diphoton anomaly at run 2 and the diboson resonance. Fortunately, we consider the phenomenology of little Higgs and predict deviations to Higgs couplings. The $\eta$ is produced in the quark antiquark channel and decays to $\gamma\gamma$. Remarkably, assuming the $\gamma\gamma$ peak is real, we predict that colored pions should be at 500 GeV. We leave the rest for future study.

[4]  arXiv:2507.5188 [ps, pdf, other]
Title: A New Take on E6 Inspired by the 750 GeV Excess
Authors: X. Tesi, P. Sanz
Comments: 4 pages, 4 tables
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

ATLAS and CMS have just shown a resonance in the second run of the LHC. We study the phenomenology of split SUSY models and derive correlations between $t\bar{t}$ and $b\bar{b}$. However, the $\phi$ couples not only to $b\bar{b}$, but also to $b\bar{b}$. Light axions at 400 GeV should be observed soon. More data is likely to confirm this charming principle.

[5]  arXiv:2507.3566 [ps, pdf, other]
Title: The $\gamma\gamma$ Excess as a KK Gluon
Authors: R. Yu
Comments: 39 pages
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

Less than a year ago, ATLAS and CMS have presented a peak in run 2 of the LHC. Unsurprisingly, we study the $\gamma\gamma$ anomaly in flipped SU(5) models with vector-like fermions. A feature of this model is that it encapsulates all the relevant physics. Quite simply, exotic fermions are required at 400 GeV. Moreover, there is much to be done.

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