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Present Status and Future Tests of the Higgsino-Singlino Sector in the NMSSM
Ulrich Ellwanger
The light higgsino-singlino scenario of the NMSSM allows to combine a naturally small parameter with a good dark matter relic density. Given the new constraints on spin-depende…
Possible Explanation of the Electron Positron Anomaly at 17 MeV in Transitions Through a Light Pseudoscalar
Ulrich Ellwanger, Stefano Moretti
We estimate the values of Yukawa couplings of a light pseudoscalar A with a mass of about 17 MeV, which would explain the anomaly observed in the Atomki pair spectrometer ex…
A 750 GeV Diphoton Signal from a Very Light Pseudoscalar in the NMSSM
Ulrich Ellwanger, Cyril Hugonie
The excess of events in the diphoton final state near 750 GeV observed by ATLAS and CMS can be explained within the NMSSM near the R-symmetry limit. Both scalars beyond the Standar…
Discovery Prospects of a Light Scalar in the NMSSM
Ulrich Ellwanger, Matias Rodriguez-Vazquez
We study a region in the NMSSM parameter space in which the mass of the SM-like Higgs boson is uplifted by ~4-17 GeV, allowing for stop masses and |A_t| <= 1 TeV alleviating the li…