Improved WIMP-search reach of the CDMS II germanium data Academic Article uri icon


  • 2015 American Physical Society. CDMS II data from the five-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 weakly interacting massive particle (WIMP)-search exposure. An extended analysis was also completed by decreasing the 10 keV analysis threshold to 5keV, to increase sensitivity near a WIMP mass of 8GeV/c2. After unblinding, there were zero candidate events above a deposited energy of 10 keV and six events in the lower-threshold analysis. This yielded minimum WIMP-nucleon spin-independent scattering cross-section limits of 1.810-44 and 1.1810-41 at 90% confidence for 60 and 8.6GeV/c2 WIMPs, respectively. This improves the previous CDMS II result by a factor of 2.4 (2.7) for 60 (8.6)GeV/c2 WIMPs.

published proceedings


altmetric score

  • 3.5

author list (cited authors)

  • Agnese, R., Anderson, A. J., Asai, M., Balakishiyeva, D., Barker, D., Thakur, R. B., ... Zhang, J.

citation count

  • 59

complete list of authors

  • Agnese, R||Anderson, AJ||Asai, M||Balakishiyeva, D||Barker, D||Thakur, R Basu||Bauer, DA||Billard, J||Borgland, A||Bowles, MA||Brandt, D||Brink, PL||Bunker, R||Cabrera, B||Caldwell, DO||Calkins, R||Cerdeno, DG||Chagani, H||Chen, Y||Cooley, J||Cornell, B||Crewdson, CH||Cushman, P||Daal, M||Di Stefano, PCF||Doughty, T||Esteban, L||Fallows, S||Figueroa-Feliciano, E||Godfrey, GL||Golwala, SR||Hall, J||Harris, HR||Hertel, SA||Hofer, T||Holmgren, D||Hsu, L||Huber, ME||Jardin, D||Jastram, A||Kamaev, O||Kara, B||Kelsey, MH||Kennedy, A||Kiveni, M||Koch, K||Leder, A||Loer, B||Lopez Asamar, E||Lukens, P||Mahapatra, R||Mandic, V||McCarthy, KA||Mirabolfathi, N||Moffatt, RA||Oser, SM||Page, K||Page, WA||Partridge, R||Pepin, M||Phipps, A||Prasad, K||Pyle, M||Qiu, H||Rau, W||Redl, P||Reisetter, A||Ricci, Y||Rogers, HE||Saab, T||Sadoulet, B||Sander, J||Schneck, K||Schnee, RW||Scorza, S||Serfass, B||Shank, B||Speller, D||Toback, D||Upadhyayula, S||Villano, AN||Welliver, B||Wilson, JS||Wright, DH||Yang, X||Yellin, S||Yen, JJ||Young, BA||Zhang, J

publication date

  • January 2015