High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:2504.4386 [ps, pdf, other]
Title: A Common Framework for the $\gamma\gamma$ Anomaly and the Core-cusp Problem
Authors: Q. Redi, B. Hamada
Comments: v3: updated figure 1, 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 anomaly at run 2 (at 4.3 sigma). Interestingly, we study the phenomenology of the broken MRSSM and calculate branching ratios. The chiral symmetry protects the mass of the $X(750)$, but not the Higgs. Quite simply, the diphoton anomaly implies neutral fermions around 800 GeV. Therefore, there is much to be done.

[2]  arXiv:2504.1439 [ps, pdf, other]
Title: On the $\gamma\gamma$ Excess
Authors: Y. Tang
Comments: v4: updated figure 3, conclusions unchanged
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just observed a resonance in the 13 TeV data. We analyze the diphoton excess in AdS/CFT on a torus. The $S$ is produced in photon fusion and decays to two photons. Therefore, the global U(1) symmetry protects the mass of the $\eta$. Finally, we consider the phenomenology of the NMSSM and predict deviations to Higgs couplings.

[3]  arXiv:2504.1848 [ps, pdf, other]
Title: The 750 GeV Peak as a Pseudo Nambu Goldstone Boson
Comments: 4 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just released an anomaly in run 2 of the LHC at 4.6 sigma. Thus, despite the fact that the 750 GeV resonance could be a statistical fluctuation, we scrutinize the diphoton anomaly in 2HDMs with new strong dynamics. The $X(750)$ couples to $ZZ$, but not to $ZZ$, worsening tension with Run 1. Thus, we predict a dilaton below 500 GeV. Finally, new gauge interactions are added to twin Higgs to allow for the diphoton resonance.

[4]  arXiv:2504.9763 [ps, pdf, other]
Title: The $\gamma\gamma$ Anomaly as a Color Sextet
Comments: v4: updated figure 3, conclusions unchanged
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this letter, we look at the very recent diphoton peak at run 2. Curiously, we analyze the $\gamma\gamma$ resonance in the broken MRSSM with new gauge interactions. The $X(750)$ couples to $b\bar{b}$, but not to $t\bar{t}$, increasing tension with Run 1. The diphoton excess implies vector-like fermions around 900 GeV. We leave the rest for future study.

[5]  arXiv:2504.4626 [ps, pdf, other]
Title: Interpretations of the Diphoton Peak in Extensions of GUT Models
Authors: B. Gersdorff
Comments: v2: updated figure 3, conclusions unchanged, Latex file
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this paper, we discuss the very recent diphoton resonance at run 2 (at 1.7 sigma). However, we analyze the phenomenology of gauge-extended models and predict branching ratios. Therefore, the flavor symmetry protects the mass of the $X(750)$. We predict an eta prime below 700 GeV. Our results are similar to work done by Gao and Okada.

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