High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:1911.5138 [ps, pdf, other]
Title: A New Take on Twin Higgs Inspired by the $\gamma\gamma$ Anomaly
Authors: H. Aydemir
Comments: v4: 34 pages, added refs, Latex file
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

Recently, ATLAS and CMS have released an excess in run 2. Remarkably, the phenomenology of $\lambda$SUSY is scrutinized and we predict correlations between $Z\gamma$ and $t\bar{t}$. Fortunately, the $S$ couples to $hh$, but not to $hh$, alleviating tension with Run 1. We predict a pseudoscalar below 900 GeV. We leave the rest for future study.

[2]  arXiv:1911.3311 [ps, pdf, other]
Title: The Diphoton Excess as a Pseudoscalar
Comments: v2: added refs
Subjects: High Energy Physics - Phenomenology (hep-ph)

Less than a year ago, ATLAS and CMS have released an excess in run 2 of the LHC. The phenomenology of the NMSSM is studied and we predict production rates. The chiral symmetry protects the mass of the $\phi$. In short, the $X$ couples to $b\bar{b}$, but not to $hh$, worsening tension with Run 1. We will provide more details in a future paper.

[3]  arXiv:1911.6233 [ps, pdf, other]
Title: Interpretations of the Diphoton Peak in Extensions of Split SUSY Models
Authors: L. Park, R. Ko
Comments: v4: updated figure 2, conclusions unchanged, added refs
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

Less than a year ago, ATLAS and CMS have measured a resonance in the latest LHC data. Thus, we consider the phenomenology of two Higgs doublet models and derive deviations to Higgs couplings. The flavor symmetry protects the mass of the $\eta$, but not the Higgs. The diphoton anomaly implies light axions around 600 GeV. Given this, our work may seem quite unexpected.

[4]  arXiv:1911.1574 [ps, pdf, other]
Title: Interpretations of the $\gamma\gamma$ Anomaly in Extensions of Seesaw Models
Comments: 26 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just measured an anomaly in run 2 of the LHC at 1.3 sigma. Surprisingly, we study the phenomenology of fat Higgs and evaluate the full mass spectrum. Unfortunately, a corollary of this model is that $t\bar{t}$ and $Z\gamma$ are predicted to be enormous. We expect an eta prime above 700 GeV. Therefore, there is much to be done.

[5]  arXiv:1911.8316 [ps, pdf, other]
Title: A Common Framework for the $\gamma\gamma$ Peak and the Galactic Center Excess
Comments: 2 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just released a peak in the latest LHC data at 2.0 sigma. We study the diphoton anomaly in singlet-extended models with charge 5/3 quarks. The $S$ couples not only to $t\bar{t}$, but also to $Z\gamma$. Quite simply, assuming the $\gamma\gamma$ anomaly is real, we predict that new strong dynamics should be at 500 GeV. More data should reveal the nature of the $\gamma\gamma$ anomaly.

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