Apr 17 – 22, 2017
UZ Obergurgl
Europe/Zurich timezone

Natural dark matter in the pMSSM

Apr 20, 2017, 7:45 PM
UZ Obergurgl

UZ Obergurgl

University Center Obergurgl Gaisbergweg 5 6456 Obergurgl Austria
Young Scientist Forum Dark Matter YSF


Melissa van Beekveld (Radboud University Nijmegen)


We evaluate the fine-tuning of the phenomenological minimal supersymmetric standard model (pMSSM). We show that, contrary to common believe, that the fine-tuning of the pMSSM is not large yet, nor under pressure by LHC searches. Low sbottom, stop and gluino masses turn out to be less relevant for low fine-tuning than commonly assumed. Fine-tuning arguments point to models with a dark matter candidate yielding the correct dark matter relic density: a bino-higgsino particle with a mass of 35−155 GeV. Some of these candidates are compatible with recent hints seen in astrophysics experiments such as Fermi-LAT and AMS-02. We argue that upcoming direct search experiments, such as XENON1T, will test all of the most natural solutions in the next few years.

Primary authors

Sascha Caron (Nikhef National institute for subatomic physics (NL)) Melissa van Beekveld (Radboud University Nijmegen) Roberto Ruiz De Austri (Instituto de Fisica Corpuscular (ES)) Prof. Wim Beenakker (Radboud University Nijmegen)

Presentation materials