Improved WIMP-search reach of the CDMS II germanium data
Abstract
CDMS II data from the 5-tower runs at the Soudan Underground Laboratory were reprocessed with an improved charge-pulse fitting algorithm. Two new analysis techniques to reject surface-event backgrounds were applied to the 612 kg days germanium-detector WIMP-search exposure. An extended analysis was also completed by decreasing the 10 keV analysis threshold to 5 keV, to increase sensitivity near a WIMP mass of 8 GeV/. After unblinding, there were zero candidate events above a deposited energy of 10 keV and 6 events in the lower-threshold analysis. This yielded minimum WIMP-nucleon spin-independent scattering cross-section limits of and cm at 90\% confidence for 60 and 8.6 GeV/ WIMPs, respectively. This improves the previous CDMS II result by a factor of 2.4 (2.7) for 60 (8.6) GeV/ WIMPs.
Keywords
Cite
@article{arxiv.1504.05871,
title = {Improved WIMP-search reach of the CDMS II germanium data},
author = {R. Agnese and A. J. Anderson and M. Asai and D. Balakishiyeva and D. Barker and R. Basu Thakur and D. A. Bauer and J. Billard and A. Borgland and M. A. Bowles and D. Brandt and P. L. Brink and R. Bunker and B. Cabrera and D. O. Caldwell and R. Calkins and D. G. Cerdeño and H. Chagani and Y. Chen and J. Cooley and B. Cornell and C. H. Crewdson and P. Cushman and M. Daal and P. C. F. Di Stefano and T. Doughty and L. Esteban and S. Fallows and E. Figueroa-Feliciano and G. L. Godfrey and S. R. Golwala and J. Hall and H. R. Harris and S. A. Hertel and T. Hofer and D. Holmgren and L. Hsu and M. E. Huber and D. Jardin and A. Jastram and O. Kamaev and B. Kara and M. H. Kelsey and A. Kennedy and M. Kiveni and K. Koch and A. Leder and B. Loer and E. Lopez Asamar and P. Lukens and R. Mahapatra and V. Mandic and K. A. McCarthy and N. Mirabolfathi and R. A. Moffatt and S. M. Oser and K. Page and W. A. Page and R. Partridge and M. Pepin and A. Phipps and K. Prasad and M. Pyle and H. Qiu and W. Rau and P. Redl and A. Reisetter and Y. Ricci and H. E. Rogers and T. Saab and B. Sadoulet and J. Sander and K. Schneck and R. W. Schnee and S. Scorza and B. Serfass and B. Shank and D. Speller and D. Toback and S. Upadhyayula and A. N. Villano and B. Welliver and J. S. Wilson and D. H. Wright and X. Yang and S. Yellin and J. J. Yen and B. A. Young and J. Zhang},
journal= {arXiv preprint arXiv:1504.05871},
year = {2015}
}
Comments
25 pages, 15 figures, slightly updated organization and text consistent with PRD referee process, Fig. 14 updated