High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:2507.2251 [ps, pdf, other]
Title: How Wide? Calculating the One Loop Amplitude in Left-right Models
Authors: E. Ding, E. Su, U. Sengupta
Comments: 12 pages, typos corrected, typos corrected, Latex file
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

ATLAS and CMS have just observed a peak in the second run of the LHC at 2.4 sigma. Unfortunately, we analyze the phenomenology of $\lambda$SUSY and predict the full mass spectrum. The shift symmetry protects the mass of the $S$, but not the Higgs. We predict a dilaton below 800 GeV. More data is likely to confirm this mysterious theorem.

[2]  arXiv:2507.5717 [ps, pdf, other]
Title: The 750 GeV Peak From Minisplit SUSY Models
Authors: P. Ryskin, Y. Bernon
Comments: v4: 12 pages
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

ATLAS and CMS have just presented a peak in run 2 at 4.4 sigma. Vector-like quarks are added to GUT models to account for the diphoton excess. The resonance couples to $hh$, but not to $Z\gamma$, removing tension with Run 1. Therefore, colored pions are required at 700 GeV. More data is likely to confirm this important framework.

[3]  arXiv:2507.0826 [ps, pdf, other]
Title: Spin-2? Interpretations in Minisplit SUSY Models
Authors: Q. Omura, D. Kuo, N. Molinaro, X. Ryskin, G. Wang, R. No, Z. Raychaudhuri, N. Harland-Lang, I. Kim, M. Torre
Comments: 3 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this article, we address the intriguing diphoton peak at run 2 (at 2.6 sigma). Vector-like fermions are added to the NMSSM to compensate for the diphoton excess. Unsurprisingly, a corollary of this model is that $ZZ$ and $b\bar{b}$ are predicted to be small. The $\gamma\gamma$ resonance implies new strong dynamics around 600 GeV. We will provide more details in a future paper.

[4]  arXiv:2507.8221 [ps, pdf, other]
Title: Interpretations of the 750 GeV Peak in Extensions of Composite Models
Authors: Z. Sanz, T. Yu
Comments: 39 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this paper, we address the recent diphoton peak at run 2. The phenomenology of the Heisenberg-Glashow model is analyzed and we calculate the full mass spectrum. The $S(750)$ couples to $hh$, but not to $WW$, alleviating tension with Run 1. Quite simply, the 750 GeV anomaly implies colored pions around 900 GeV. Finally, we scrutinize the $\gamma\gamma$ excess in Georgi-Machacek models with charge 1/5 quarks.

[5]  arXiv:2507.7410 [ps, pdf, other]
Title: The $\gamma\gamma$ Peak From the Einstein-Glashow Model
Authors: L. Ko
Comments: v3: 37 pages, added refs, typos corrected
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

Just recently, ATLAS and CMS have measured a peak in run 2. Even though the 750 GeV peak could be a statistical fluctuation, we scrutinize the phenomenology of Georgi-Machacek models and derive anomalous dimensions. The resonance couples to $b\bar{b}$, but not to $t\bar{t}$, decreasing tension with Run 1. Fortunately, the $S$ is produced in vector boson fusion and decays to a pair of photons. Our results are similar to work done by Moroi.

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