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Summary of the ATLAS Experiment’s Sensitivity to Supersymmetry After LHC Run 1 - Interpreted in the Phenomenological MSSM
by Simone Amoroso, Hannah Arnold, Christopher Betancourt, Michael Böhler, Renaud Bruneliere, Felix Bührer, Carsten D. Burgard, Daniel Büscher, Fabio Cardillo, Elias Coniavitis, Valerio Consorti, Phuong Nguyen Dang, Valerio Dao, Andrea Di Simone, Claudia Giuliani, Gregor Herten, Karl Jakobs, Tomáš Javůrek, Peter Jenni, Florian Kiss, Karsten Köneke, Anna Kopp, Susanne Kühn, Ulrich Landgraf, Christian Lüdtke, Kambiz Mahboubi, Wolfgang Mohr, Martina Javůrková, Ulrich Parzefall, Manfredi Ronzani, Kilian Rosbach, Frederik Rühr, Zuzana Rúriková, Dirk Sammel, Christian Schillo, Markus Schumacher, Philip Sommer, Jan Erik Sundermann, Duc Bao Ta, Kim Temming, Vakhtang Tsiskaridze, Francesca Consiglia Ungaro, Holger von Radziewski, Christian Weiser, Matthias Werner, Lei Zhang, Stephanie Zimmermann, ATLAS Collaboration CERN · 2015
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Abstract: A summary of the constraints from the ATLAS experiment on R-parity-conserving supersymmetry is presented. Results from 22 separate ATLAS searches are considered, each based on analysis of up to 20.3 fb−1 of proton-proton collision data at centre-of-mass energies of s√=7 and 8 TeV at the Large Hadron Collider. The results are interpreted in the context of the 19-parameter phenomenological minimal supersymmetric standard model, in which the lightest supersymmetric particle is a neutralino, taking into account constraints from previous precision electroweak and flavour measurements as well as from dark matter related measurements. The results are presented in terms of constraints on supersymmetric particle masses and are compared to limits from simplified models. The impact of ATLAS searches on parameters such as the dark matter relic density, the couplings of the observed Higgs boson, and the degree of electroweak fine-tuning is also shown. Spectra for surviving supersymmetry model points with low fine-tunings are presented