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arXiv · 1105.3377

Combined Limits on WIMPs from the CDMS and EDELWEISS Experiments

CDMS·EDELWEISS Collaborations·:·Z. Ahmed·D. S. Akerib·E. Armengaud·S. Arrenberg·C. Augier·C. N. Bailey·D. Balakishiyeva·L. Baudis·D. A. Bauer·A. Benoît·L. Bergé·J. Blümer·P. L. Brink·A. Broniatowski·T. Bruch·V. Brudanin·R. Bunker·B. Cabrera·D. O. Caldwell·B. Censier·M. Chapellier·G. Chardin·F. Charlieux·J. Cooley·P. Coulter·G. A. Cox·P. Cushman·M. Daal·X. Defay·M. De Jesus·F. DeJongh·P. C. F. Di Stefano·Y. Dolgorouki·J. Domange·L. Dumoulin·M. R. Dragowsky·K. Eitel·S. Fallows·E. Figueroa-Feliciano·J. Filippini·D. Filosofov·N. Fourches·J. Fox·M. Fritts·J. Gascon·G. Gerbier·J. Gironnet·S. R. Golwala·M. Gros·J. Hall·R. Hennings-Yeomans·S. Henry·S. A. Hertel·S. Hervé·D. Holmgren·L. Hsu·M. E. Huber·A. Juillard·O. Kamaev·M. Kiveni·H. Kluck·M. Kos·V. Kozlov·H. Kraus·V. A. Kudryavtsev·S. W. Leman·S. Liu·P. Loaiza·R. Mahapatra·V. Mandic·S. Marnieros·C. Martinez·K. A. McCarthy·N. Mirabolfathi·D. Moore·P. Nadeau·X-F. Navick·H. Nelson·C. Nones·R. W. Ogburn·E. Olivieri·P. Pari·L. Pattavina·B. Paul·A. Phipps·M. Pyle·X. Qiu·W. Rau·A. Reisetter·Y. Ricci·M. Robinson·S. Rozov·T. Saab·B. Sadoulet·J. Sander·V. Sanglard·B. Schmidt
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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.d 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 WIMP-nucleon cross-section. For a WIMP mass of 90 GeV/c^2, where this analysis is most sensitive, a cross-section of 3.3 x 10^{-44} cm^2 is excluded at 90% CL. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700 GeV/c^2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others.

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CDMS, EDELWEISS Collaborations, :, Z. Ahmed, D. S. Akerib, E. Armengaud, S. Arrenberg, C. Augier, C. N. Bailey, D. Balakishiyeva, L. Baudis, D. A. Bauer, A. Benoît, L. Bergé, J. Blümer, P. L. Brink, A. Broniatowski, T. Bruch, V. Brudanin, R. Bunker, B. Cabrera, D. O. Caldwell, B. Censier, M. Chapellier, G. Chardin, F. Charlieux, J. Cooley, P. Coulter, G. A. Cox, P. Cushman, M. Daal, X. Defay, M. De Jesus, F. DeJongh, P. C. F. Di Stefano, Y. Dolgorouki, J. Domange, L. Dumoulin, M. R. Dragowsky, K. Eitel, S. Fallows, E. Figueroa-Feliciano, J. Filippini, D. Filosofov, N. Fourches, J. Fox, M. Fritts, J. Gascon, G. Gerbier, J. Gironnet, S. R. Golwala, M. Gros, J. Hall, R. Hennings-Yeomans, S. Henry, S. A. Hertel, S. Hervé, D. Holmgren, L. Hsu, M. E. Huber, A. Juillard, O. Kamaev, M. Kiveni, H. Kluck, M. Kos, V. Kozlov, H. Kraus, V. A. Kudryavtsev, S. W. Leman, S. Liu, P. Loaiza, R. Mahapatra, V. Mandic, S. Marnieros, C. Martinez, K. A. McCarthy, N. Mirabolfathi, D. Moore, P. Nadeau, X-F. Navick, H. Nelson, C. Nones, R. W. Ogburn, E. Olivieri, P. Pari, L. Pattavina, B. Paul, A. Phipps, M. Pyle, X. Qiu, W. Rau, A. Reisetter, Y. Ricci, M. Robinson, S. Rozov, T. Saab, B. Sadoulet, J. Sander, V. Sanglard, B. Schmidt. 2011-05-17. Combined Limits on WIMPs from the CDMS and EDELWEISS Experiments. https://doi.org/10.1103/physrevd.84.011102

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