High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:2510.8976 [ps, pdf, other]
Title: Tension With Run 1? Calculating the One Loop Amplitude in Left-right Models
Authors: X. Okada, N. Li
Comments: v4: added refs
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

A few months ago, ATLAS and CMS have presented a resonance in run 2 of the LHC. Unsurprisingly, we study the diphoton excess in two Higgs doublet models with new gauge interactions. A feature of this model is that $t\bar{t}$ and $b\bar{b}$ are predicted to be small. Therefore, assuming the diphoton peak is real, we predict that conformal dynamics should be at 400 GeV. Given this, our work may seem quite charming.

[2]  arXiv:2510.9854 [ps, pdf, other]
Title: Interpretations of the Diphoton Peak in SU(5)
Comments: 3 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just observed an anomaly in the 13 TeV data at 3.4 sigma. Remarkably, we study the phenomenology of minimal composite Higgs and derive mass ratios. Unfortunately, a downside of this model is that it encapsulates all the relevant physics. Colored pions are required at 500 GeV. We will provide more details in a future paper.

[3]  arXiv:2510.7247 [ps, pdf, other]
Title: A New Look at Seesaw Models Inspired by the $\gamma\gamma$ Peak
Authors: P. Ko, J. Shang
Comments: v3: 4 pages, added refs, Latex file
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this note, we look at the recent diphoton excess at run 2. We study the 750 GeV excess in SU(5). Thus, the flavor symmetry protects the mass of the resonance, but not the Higgs. The $\gamma\gamma$ resonance implies vector-like fermions around 900 GeV. Finally, we analyze the $\gamma\gamma$ excess in minisplit SUSY models.

[4]  arXiv:2510.4706 [ps, pdf, other]
Title: Connecting the 750 GeV Anomaly and Muon g-2
Comments: 39 pages, added refs
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just released a peak in the second run of the LHC. We analyze the phenomenology of Pati-Salam models and derive branching ratios. Curiously, a drawback of this model is that it is very predictive. Assuming the $\gamma\gamma$ resonance is real, we predict that light axions should be at 400 GeV. Our results are similar to work done by Gersdorff.

[5]  arXiv:2510.2833 [ps, pdf, other]
Title: The 750 GeV Anomaly as an Axino
Authors: C. Hamada, U. Park
Comments: v2: added refs
Subjects: High Energy Physics - Phenomenology (hep-ph)

Less than a year ago, ATLAS and CMS have reported an anomaly in the second run of the LHC. We consider the phenomenology of GUT models and analyze cross sections. A downside of this model is that it is very predictive. Moreover, the discrete symmetry protects the mass of the $S$, but not the Higgs. Therefore, there is much to be done.

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