Combined limits on WIMPs from the CDMS and EDELWEISS experiments

Ahmed, Z.; Akerib, D.; Armengaud, E.; Arrenberg, S.; Augier, C.; Bailey, C.; Balakishiyeva, D.; Baudis, L.; Bauer, D.; Benoît, A.; Bergé, L.; Blümer, J.; Brink, P.; Broniatowski, A.; Bruch, T.; Brudanin, V.; Bunker, R.; Cabrera, B.; Caldwell, D.; Censier, B.; Chapellier, M.; Chardin, G.; Charlieux, F.; Cooley, J.; Coulter, P.; Cox, G.; Cushman, P.; Daal, M.; Defay, X.; De Jesus, M.; DeJongh, F.; Di Stefano, P.; Dolgorouki, Y.; Domange, J.; Dumoulin, L.; Dragowsky, M.; Eitel, K.; Fallows, S.; Figueroa-Feliciano, E.; Filippini, J.; Filosofov, D.; Fourches, N.; Fox, J.; Fritts, M.; Gascon, J.; Gerbier, G.; Gironnet, J.; Golwala, S.; Gros, M.; Hall, J.; Hennings-Yeomans, R.; Henry, S.; Hertel, S.; Hervé, S.; Holmgren, D.; Hsu, L.; Huber, M.; Juillard, A.; Kamaev, O.; Kiveni, M.; Kluck, H.; Kos, M.; Kozlov, V.; Kraus, H.; Kudryavtsev, V.; Leman, S.; Liu, S.; Loaiza, P.; Mahapatra, R.; Mandic, V.; Marnieros, S.; Martinez, C.; McCarthy, K.; Mirabolfathi, N.; Moore, D.; Nadeau, P.; Navick, X-F.; Nelson, H.; Nones, C.; Ogburn, R.; Olivieri, E.; Pari, P.; Pattavina, L.; Paul, B.; Phipps, A.; Pyle, M.; Qiu, X.; Rau, W.; Reisetter, A.; Ricci, Y.; Robinson, M.; Rozov, S.; Saab, T.; Sadoulet, B.; Sander, J.; Sanglard, V.; Schmidt, B.; Schnee, R.; Scorza, S.; Seitz, D.; Semikh, S.; Serfass, B.; Sundqvist, K.; Tarka, M.; Torrento-Coello, A.; Vagneron, L.; Verdier, M.-A.; Walker, R.; Wikus, P.; Yakushev, E.; Yellin, S.; Yoo, J.; Young, B.; Zhang, J.

Author(s)

Figueroa-Feliciano, Enectali; Hertel, Scott Alexander; Leman, Steven W.; McCarthy, Kevin Ahmad; Wikus, Patrick

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Abstract

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614 kg·days equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent weakly interacting, massive particle (WIMP)-nucleon cross section. For a WIMP mass of 90 GeV/c[superscript 2], where this analysis is most sensitive, a cross section of 3.3×10[superscript -44] cm[superscript 2] is excluded at 90% C.L. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700 GeV/c[superscript 2]. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others.

Date issued

2011-07

URI

http://hdl.handle.net/1721.1/66938

Department

Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space Research

Journal

Physical Review D

Publisher

American Physical Society

Citation

Version: Final published version

ISSN

1550-7998

1550-2368

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