Skip to main content
eScholarship
Open Access Publications from the University of California

Search for low-mass dark matter with CDMSlite using a profile likelihood fit

  • Author(s): Agnese, R
  • Aralis, T
  • Aramaki, T
  • Arnquist, IJ
  • Azadbakht, E
  • Baker, W
  • Banik, S
  • Barker, D
  • Bauer, DA
  • Binder, T
  • Bowles, MA
  • Brink, PL
  • Bunker, R
  • Cabrera, B
  • Calkins, R
  • Cameron, RA
  • Cartaro, C
  • Cerdeño, DG
  • Chang, Y-Y
  • Cooley, J
  • Cornell, B
  • Cushman, P
  • De Brienne, F
  • Doughty, T
  • Fascione, E
  • Figueroa-Feliciano, E
  • Fink, CW
  • Fritts, M
  • Gerbier, G
  • Germond, R
  • Ghaith, M
  • Golwala, SR
  • Harris, HR
  • Herbert, N
  • Hong, Z
  • Hoppe, EW
  • Hsu, L
  • Huber, ME
  • Iyer, V
  • Jardin, D
  • Jastram, A
  • Jena, C
  • Kelsey, MH
  • Kennedy, A
  • Kubik, A
  • Kurinsky, NA
  • Lawrence, RE
  • Loer, B
  • Lopez Asamar, E
  • Lukens, P
  • MacDonell, D
  • Mahapatra, R
  • Mandic, V
  • Mast, N
  • Miller, E
  • Mirabolfathi, N
  • Mohanty, B
  • Morales Mendoza, JD
  • Nelson, J
  • Neog, H
  • Orrell, JL
  • Oser, SM
  • Page, WA
  • Partridge, R
  • Pepin, M
  • Ponce, F
  • Poudel, S
  • Pyle, M
  • Qiu, H
  • Rau, W
  • Reisetter, A
  • Ren, R
  • Reynolds, T
  • Roberts, A
  • Robinson, AE
  • Rogers, HE
  • Saab, T
  • Sadoulet, B
  • Sander, J
  • Scarff, A
  • Schnee, RW
  • Scorza, S
  • Senapati, K
  • Serfass, B
  • Speller, D
  • Stanford, C
  • Stein, M
  • Street, J
  • Tanaka, HA
  • Toback, D
  • Underwood, R
  • Villano, AN
  • von Krosigk, B
  • Watkins, SL
  • Wilson, JS
  • Wilson, MJ
  • Winchell, J
  • Wright, DH
  • Yellin, S
  • Young, BA
  • Zhang, X
  • Zhao, X
  • et al.

Published Web Location

http://10.0.4.79/physrevd.99.062001
No data is associated with this publication.
Abstract

© 2019 American Physical Society. The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (<10 GeV/c2) dark matter particles. We present an analysis of the final CDMSlite dataset, taken with a different detector than was used for the two previous CDMSlite datasets. This analysis includes a data "salting" method to protect against bias, improved noise discrimination, background modeling, and the use of profile likelihood methods to search for a dark matter signal in the presence of backgrounds. We achieve an energy threshold of 70 eV and significantly improve the sensitivity for dark matter particles with masses between 2.5 and 10 GeV/c2 compared to previous analyses. We set an upper limit on the dark matter-nucleon scattering cross section in germanium of 5.4×10-42 cm2 at 5 GeV/c2, a factor of ∼2.5 improvement over the previous CDMSlite result.

Item not freely available? Link broken?
Report a problem accessing this item