Improved EDELWEISS-III sensitivity for low-mass WIMPs using a profile likelihood approach

@article{Hehn2016ImprovedES,
  title={Improved EDELWEISS-III sensitivity for low-mass WIMPs using a profile likelihood approach},
  author={Lorenz Hehn and E. Armengaud and Q. Arnaud and Cyril Augier and Aur{\'e}lien Benoit and Luc Berg{\'e} and J. Billard and Johannes Bluemer and T. Boissi{\`e}re and A. Broniatowski and Pierre Cāmus and Antoine Cazes and Marion Chapellier and F. Charlieux and Mora Jes{\'u}s and L. Dumoulin and Klaus Eitel and Nina F{\"o}rster and Jules Gascon and Alexandre Giuliani and Michel Gros and Geertje Heuermann and Y. Jin and Audrey Juillard and Cécile Kéfélian and M. Kleifges and V. Kozlov and Hannes Kraus and Vitaly A. Kudryavtsev and Herv{\'e} Lesueur and S. Marnieros and X-F. Navick and Claudia Nones and E. Olivieri and P. Pari and Barnita Paul and M.-C. Piro and D. V. Poda and E. Queguiner and S. Rozov and V{\'e}ronique Sanglard and Bernd Schmidt and Silvia Scorza and Bernhard Siebenborn and Denis Tcherniakhovski and L. Vagneron and Michael Weber and Evgeniy Yakushev},
  journal={The European Physical Journal C},
  year={2016},
  volume={76},
  pages={1-10}
}
We report on a dark matter search for a Weakly Interacting Massive Particle (WIMP) in the mass range $$m_{\chi } \in [4, 30]\,\mathrm{GeV/}c^2$$mχ∈[4,30]GeV/c2 with the EDELWEISS-III experiment. A 2D profile likelihood analysis is performed on data from eight selected detectors with the lowest energy thresholds leading to a combined fiducial exposure of 496 kg-days. External backgrounds from $$\gamma $$γ- and $$\beta $$β-radiation, recoils from $$^{206}\mathrm{Pb}$$206Pb and neutrons as well as… CONTINUE READING

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