New Results from the Search for Low-Mass Weakly Interacting Massive Particles with the CDMS Low Ionization Threshold Experiment

作者：R. Agnese, Adam J. Anderson, T. Aramaki, M. Asai, William K. Baker, D. Balakishiyeva, D. Barker, R. Basu Thakur, D. A. Bauer, Julien Billard, A. W. Borgland, M. A. Bowles, P. L. Brink, R. Bunker, Blas Cabrera, D. O. Caldwell, R. Calkins, D. G. Cerdeño, Hassan Chagani, Y. Chen, J. Cooley, Bruce A. Cornell, P. Cushman, M. Daal, P. C. F. Di Stefano, Timothy A. Doughty, Luis Mariano Esteban, S. Fallows, Enectali Figueroa-Feliciano, M. Ghaith, G. L. Godfrey, S. R. Golwala, J. Hall, Harlan Rusty Harris, T. Höfer, D. J. Holmgren, L. Hsu, M. E. Huber, D. Jardin, A. Jastram, O. Kamaev, Burhan Kara, M.H. Kelsey, A. Kennedy, A. Leder, B. Loer, E. Lopez Asamar, P. Lukens, Rupak Mahapatra, V. Mandic, N. Mast, N. Mirabolfathi, R. A. Moffatt, J. D. Morales Mendoza, S. M. Oser, K. Page, W. A. Page, Richard Partridge, M. Pepin, A. Phipps, K. Prasad, M. Pyle, H. Qiu, W. Rau, P. Redl, A. Reisetter, Ylenia Ricci, Amy Roberts, H. E. Rogers, T. Saab, B. Sadoulet, Jürgen W. Sander, K. Schneck, Richard W. Schnee, S. Scorza, B. Serfass, B. Shank, Danielle Speller, D. Toback, R. Underwood, S. Upadhyayula, A. N. Villano, Bradford Welliver, J. S. Wilson, D. H. Wright, S. Yellin, J. J. Yen, B. A. Young, Jinlong Zhang · 发表于：Physical Review Letters · 年份：2016 · DOI：10.1103/physrevlett.116.071301 · 被引用次数：373 · 研究领域：Dark Matter and Cosmic Phenomena、Particle physics theoretical and experimental studies、Neutrino Physics Research

The CDMS low ionization threshold experiment (CDMSlite) uses cryogenic germanium detectors operated at a relatively high bias voltage to amplify the phonon signal in the search for weakly interacting massive particles (WIMPs). Results are presented from the second CDMSlite run with an exposure of 70 kg day, which reached an energy threshold for electron recoils as low as 56 eV. A fiducialization cut reduces backgrounds below those previously reported by CDMSlite. New parameter space for the WIMP-nucleon spin-independent cross section is excluded for WIMP masses between 1.6 and 5.5 GeV/c^{2}.