High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:2504.2275 [ps, pdf, other]
Title: The 750 GeV Resonance From Left-right Models
Authors: O. Chiang, J. Zhu
Comments: v2: 47 pages, added refs
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

ATLAS and CMS have just released an excess in the latest LHC data. Despite the fact that the 750 GeV peak could be a statistical fluctuation, we analyze the 750 GeV peak in singlet-extended models with vector-like fermions. The flavor symmetry stabilizes the mass of the $X(750)$. Consequently, exotic fermions are required at 600 GeV. More data should reveal the nature of the diphoton anomaly.

[2]  arXiv:2504.7093 [ps, pdf, other]
Title: Tension With Run 1? Interpreting the 750 GeV Resonance in Pati-Salam Models
Authors: A. Fichet, W. Cline, D. Cao, B. Shang, P. Nomura, U. Staub, C. Marzocca, F. Wang, B. Yu, Q. Cline
Comments: v2: 20 pages, added refs, reference added, reference added, Latex file, pdflatex, no figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

In this paper, we look at the intriguing diphoton excess at run 2 (at 3.3 sigma). Remarkably, new gauge interactions are added to split SUSY models to explain the $\gamma\gamma$ resonance. The global U(1) symmetry protects the mass of the $S$, but not the Higgs. Unfortunately, vector-like fermions at 400 GeV should be observed soon. Our results are similar to work done by Sannino and Harigaya.

[3]  arXiv:2504.3311 [ps, pdf, other]
Title: A New Take on SO(10) Inspired by the Diphoton Peak
Authors: V. Park
Comments: 48 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just seen a peak in the second run of the LHC at 4.7 sigma. Thus, we analyze the phenomenology of composite twin Higgs and evaluate decay widths. Fortunately, the $S(750)$ couples to $Z\gamma$, but not to $WW$, alleviating tension with Run 1. We predict a pion below 500 GeV. Finally, we study the phenomenology of the NMSSM and derive correlations between $WW$ and $WW$.

[4]  arXiv:2504.3770 [ps, pdf, other]
Title: The $\gamma\gamma$ Peak From GUT Models
Authors: X. Okada, F. Sanz, N. Yanagida
Comments: 39 pages, reference added
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

ATLAS and CMS have just measured a resonance in the latest LHC data. We scrutinize the phenomenology of two Higgs doublet models and analyze 4-body decays. The $X(750)$ couples to $t\bar{t}$, but not to $t\bar{t}$, removing tension with Run 1. Unfortunately, new gauge interactions are required at 500 GeV. We leave the rest for future study.

[5]  arXiv:2504.9510 [ps, pdf, other]
Title: A New Look at SU(5) Inspired by the 750 GeV Peak
Authors: C. Zheng, O. Mayes
Comments: v2: 37 pages
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

In this note, we discuss the recent diphoton excess at run 2 and the 2 TeV resonance. We study the phenomenology of composite models and evaluate flavor observables. The $\eta$ is produced in inelastic scattering and decays to $\gamma\gamma$. Thus, exotic fermions are required at 500 GeV. Given this, our work may seem quite mysterious.

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