High Energy Physics - 750 GeV

New submissions [more]

[1]  arXiv:1709.6130 [ps, pdf, other]
Title: On the Diphoton Resonance
Authors: V. Yagyu, J. Hubisz
Comments: v3: 39 pages, added refs, pdflatex
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

ATLAS and CMS have just released a resonance in run 2 of the LHC. Even though the 750 GeV excess could be a statistical fluctuation, we analyze the $\gamma\gamma$ peak in Pati-Salam models on warped metric. Unsurprisingly, the chiral symmetry stabilizes the mass of the $X$. Vector-like quarks are required at 900 GeV. Finally, we consider the phenomenology of large N QCD and evaluate cross sections.

[2]  arXiv:1709.7270 [ps, pdf, other]
Title: The $\gamma\gamma$ Excess: Interpretations in Singlet-extended Models
Authors: K. Perez
Comments: 4 pages, BibTeX
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

In this note, we talk about the intriguing diphoton excess at run 2 (at 3.2 sigma). We analyze the $\gamma\gamma$ excess in Georgi-Machacek models with charge 4/3 quarks. In short, the $S(750)$ couples not only to $b\bar{b}$, but also to $hh$. We predict a heavy pion below 500 GeV. Finally, we scrutinize the phenomenology of twin Higgs and derive decay widths.

[3]  arXiv:1709.9346 [ps, pdf, other]
Title: The 750 GeV Resonance: A KK Graviton in Twin Higgs
Comments: v4: 34 pages, added refs, Latex file
Subjects: High Energy Physics - Phenomenology (hep-ph)

In this paper, we talk about the recent diphoton anomaly at run 2 and $h \to \mu \tau$. Moreover, we scrutinize the diphoton peak in twin Higgs. The chiral symmetry stabilizes the mass of the $S(750)$. Therefore, we predict a KK graviton below 500 GeV. Our results are similar to work done by Delaunay.

[4]  arXiv:1709.8082 [ps, pdf, other]
Title: A New Look at the NMSSM Inspired by the $\gamma\gamma$ Peak
Comments: 13 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

A few months ago, ATLAS and CMS have measured a peak in the latest LHC data. Surprisingly, the phenomenology of 2HDMs is considered and we evaluate decay widths. The discrete symmetry protects the mass of the $\eta$, but not the Higgs. Remarkably, we predict a pseudo Nambu Goldstone boson below 800 GeV. Finally, despite the fact that the diphoton resonance could be a statistical fluctuation, we study the diphoton peak in two Higgs doublet models.

[5]  arXiv:1709.5756 [ps, pdf, other]
Title: The Diphoton Resonance From Little Higgs
Comments: v2: 4 pages
Subjects: High Energy Physics - Phenomenology (hep-ph)

ATLAS and CMS have just reported a resonance in the second run of the LHC at 1.6 sigma. The 750 GeV resonance is scrutinized in Georgi-Machacek models with heavy scalars. The $X(750)$ couples to $t\bar{t}$, but not to $hh$, decreasing tension with Run 1. Surprisingly, new strong dynamics at 600 GeV should be observed soon. We will provide more details in a future paper.

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