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Insertion of STC into TRT at the Department of Physics, Oxford
Credit: CERN

Hans Kraus

Professor of Physics

Research theme

  • Particle astrophysics & cosmology

Sub department

  • Particle Physics

Research groups

  • LUX-ZEPLIN
Hans.Kraus@physics.ox.ac.uk
Telephone: 01865 (2)73361
Denys Wilkinson Building, room 623
  • About
  • Publications

Exploring Low-Mass Dark Matter with CRESST

Journal of Low Temperature Physics Springer Nature 184:3-4 (2016) 866-872

Authors:

R Strauss, G Angloher, A Bento, C Bucci, L Canonica, X Defay, A Erb, FV Feilitzsch, N Ferreiro Iachellini, P Gorla, A Gütlein, D Hauff, J Jochum, M Kiefer, H Kluck, H Kraus, JC Lanfranchi, J Loebell, A Münster, C Pagliarone, F Petricca, W Potzel, F Pröbst, F Reindl, K Schäffner, J Schieck, S Schönert, W Seidel, L Stodolsky, C Strandhagen, A Tanzke, HH Trinh Thi, C Türkoglu, M Uffinger, A Ulrich, I Usherov, S Wawoczny, M Willers, M Wüstrich, A Zöller
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Improved EDELWEISS-III sensitivity for low-mass WIMPs using a profile likelihood approach

(2016)

Authors:

EDELWEISS Collaboration, L Hehn, E Armengaud, Q Arnaud, C Augier, A Benoît, L Bergé, J Billard, J Blümer, T de Boissière, A Broniatowski, P Camus, A Cazes, M Chapellier, F Charlieux, M De Jésus, L Dumoulin, K Eitel, N Foerster, J Gascon, A Giuliani, M Gros, G Heuermann, Y Jin, A Juillard, C Kéfélian, M Kleifges, V Kozlov, H Kraus, VA Kudryavtsev, H Le-Sueur, S Marnieros, X-F Navick, C Nones, E Olivieri, P Pari, B Paul, M-C Piro, D Poda, E Queguiner, S Rozov, V Sanglard, B Schmidt, S Scorza, B Siebenborn, D Tcherniakhovski, L Vagneron, M Weber, E Yakushev
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Limits on Momentum-Dependent Asymmetric Dark Matter with CRESST-II.

Physical review letters 117:2 (2016) 021303-021303

Authors:

G Angloher, A Bento, C Bucci, L Canonica, X Defay, A Erb, FV Feilitzsch, N Ferreiro Iachellini, P Gorla, A Gütlein, D Hauff, J Jochum, M Kiefer, H Kluck, H Kraus, J-C Lanfranchi, J Loebell, A Münster, C Pagliarone, F Petricca, W Potzel, F Pröbst, F Reindl, K Schäffner, J Schieck, S Schönert, W Seidel, L Stodolsky, C Strandhagen, R Strauss, A Tanzke, HH Trinh Thi, C Türkoğlu, M Uffinger, A Ulrich, I Usherov, S Wawoczny, M Willers, M Wüstrich, A Zöller

Abstract:

The usual assumption in direct dark matter searches is to consider only the spin-dependent or spin-independent scattering of dark matter particles. However, especially in models with light dark matter particles O(GeV/c^{2}), operators which carry additional powers of the momentum transfer q^{2} can become dominant. One such model based on asymmetric dark matter has been invoked to overcome discrepancies in helioseismology and an indication was found for a particle with a preferred mass of 3  GeV/c^{2} and a cross section of 10^{-37}  cm^{2}. Recent data from the CRESST-II experiment, which uses cryogenic detectors based on CaWO_{4} to search for nuclear recoils induced by dark matter particles, are used to constrain these momentum-dependent models. The low energy threshold of 307 eV for nuclear recoils of the detector used, allows us to rule out the proposed best fit value above.
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Signals induced by charge-trapping in EDELWEISS FID detectors: analytical modeling and applications

(2016)

Authors:

The EDELWEISS Collaboration, Q Arnaud, E Armengaud, C Augier, A Benoît, L Bergé, J Billard, J Blümer, T de Boissière, A Broniatowski, P Camus, A Cazes, M Chapellier, F Charlieux, L Dumoulin, K Eitel, N Foerster, N Fourches, J Gascon, A Giuliani, M Gros, L Hehn, G Heuermann, M De Jésus, Y Jin, A Juillard, M Kleifges, V Kozlov, H Kraus, C Kéfélian, VA Kudryavtsev, H Le-Sueur, S Marnieros, X-F Navick, C Nones, E Olivieri, P Pari, B Paul, M-C Piro, D Poda, E Queguiner, S Rozov, V Sanglard, B Schmidt, S Scorza, B Siebenborn, D Tcherniakhovski, L Vagneron, M Weber, E Yakushev
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LUMINEU: a search for neutrinoless double beta decay based on ZnMoO 4 scintillating bolometers

Journal of Physics: Conference Series Institute of Physics 718:6 (2016) 062008

Authors:

Eric Armengaud, Quentin Arnaud, Corinne Augier, Laurent Bergé, Roman S Boiko, Till Bergmann, Johannes Blümer, Alexandre Broniatowski, Victor Brudanin, Philippe Camus, Antoine Cazes, Maurice Chapellier, Florence Charlieux, Dmitry M Chernyak, Noël Coron, Philip Coulter, Fedor A Danevich, Thibault D Boissiére, Rodolphe Decourt, Maryvonne de Jesus, Laurent Devoyon, Anne-Aelle Drillien, Louis Dumoulin, Klaus Eitel, Christian Enss, Dmitry Filosofov, Andreas Fleischmann, Nadine Foerster, Nicolas Fourches, Jules Gascon, Loredano Gastaldo, Gilles Gerbier, Andrea Giuliani, Daniel Gray, Michel Gros, Lukas Hehn, Samuel Henry, Savajols Hervé, Geertje Heuermann, Vincent Humbert, Igor M Ivanov, Alex Juillard, Cecile Kéfélian, Matthias Kleifges, Holger Kluck, VV Kobychev, F Koskas, Vladislav Kozlov, Alain Benoît

Abstract:

The LUMINEU is designed to investigate the possibility to search for neutrinoless double beta decay in 100Mo by means of a large array of scintillating bolometers based on ZnMoO4 crystals enriched in 100Mo. High energy resolution and relatively fast detectors, which are able to measure both the light and the heat generated upon the interaction of a particle in a crystal, are very promising for the recognition and rejection of background events. We present the LUMINEU concepts and the experimental results achieved aboveground and underground with large-mass natural and enriched crystals. The measured energy resolution, the α/β discrimination power and the radioactive internal contamination are all within the specifications for the projected final LUMINEU sensitivity. Simulations and preliminary results confirm that the LUMINEU technology can reach zero background in the region of interest (around 3 MeV) with exposures of the order of hundreds kgXyears, setting the bases for a next generation 0v2β decay experiment capable to explore the inverted hierarchy region of the neutrino mass pattern.
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