High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:2610.6673 [ps, pdf, other]
Title: Tension With Run 1? Interpretations in Singlet-extended Models
Authors: I. Ko, L. Sanz
Comments: 19 pages
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

In this note, we talk about the intriguing diphoton excess at run 2 and $B \to D \tau \nu$. The $\gamma\gamma$ anomaly is analyzed in gauge-extended models with new gauge interactions. The $\eta$ couples not only to $ZZ$, but also to $Z\gamma$. Fortunately, charge 8/3 quarks at 600 GeV should be observed soon. More data should reveal the nature of the 750 GeV resonance.

[2]  arXiv:2610.2882 [ps, pdf, other]
Title: The 750 GeV Anomaly as an Axino
Comments: v3: updated figure 2, conclusions unchanged
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

ATLAS and CMS have just seen a peak in run 2 at 3.8 sigma. Quite simply, we study the diphoton anomaly in composite twin Higgs with neutralinos. The $X$ is produced in vector boson fusion and decays to $\gamma\gamma$. Unfortunately, neutralinos are required at 900 GeV. We leave the rest for future study.

[3]  arXiv:2610.8905 [ps, pdf, other]
Title: Interpretations of the $\gamma\gamma$ Excess in Left-right Models
Comments: 11 pages
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

ATLAS and CMS have just seen an excess in the latest LHC data. Moreover, light axions are added to large N QCD to compensate for the $\gamma\gamma$ peak. The $X(750)$ couples not only to $hh$, but also to $hh$. Charge 8/3 quarks are required at 800 GeV. Our results are similar to work done by Dey.

[4]  arXiv:2610.8593 [ps, pdf, other]
Title: How Wide? A Pion in Twin Higgs
Comments: v2: updated figure 2, conclusions unchanged
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

In this article, we look at the very recent diphoton peak at run 2 (at 2.2 sigma). However, neutral fermions are added to the MSSM to explain the 750 GeV anomaly. In short, the resonance couples to $ZZ$, but not to $hh$, decreasing tension with Run 1. We expect an axion above 900 GeV. Finally, we study the diphoton anomaly in GUT models on 3-brane.

[5]  arXiv:2610.4011 [ps, pdf, other]
Title: Interpretations of the 750 GeV Excess in Singlet-extended Models
Authors: O. Buttazzo
Comments: 29 pages, reference added
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

ATLAS and CMS have just seen an excess in the second run of the LHC at 1.9 sigma. We scrutinize the $\gamma\gamma$ resonance in SO(10). Remarkably, the flavor symmetry stabilizes the mass of the $X$. The diphoton resonance implies neutralinos around 600 GeV. More data is likely to confirm this pretty law.

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