Arnaud, Q., Armengaud, E., Augier, C. et al. (40 more authors) (2018) Optimizing EDELWEISS detectors for low-mass WIMP searches. Physical Review D, 97 (2). 022003. ISSN 2470-0010
Abstract
The physics potential of EDELWEISS detectors for the search of low-mass weakly interacting massive particles (WIMPs) is studied. Using a data-driven background model, projected exclusion limits are computed using frequentist and multivariate analysis approaches, namely, profile likelihood and boosted decision tree. Both current and achievable experimental performances are considered. The optimal strategy for detector optimization depends critically on whether the emphasis is put on WIMP masses below or above ∼5 GeV/c2. The projected sensitivity for the next phase of the EDELWEISS-III experiment at the Modane Underground Laboratory (LSM) for low-mass WIMP search is presented. By 2018 an upper limit on the spin-independent WIMP-nucleon cross section of σSI=7×10−42 cm2 is expected for a WIMP mass in the range 2–5 GeV/c2. The requirements for a future hundred-kilogram-scale experiment designed to reach the bounds imposed by the coherent scattering of solar neutrinos are also described. By improving the ionization resolution down to 50 eVee, we show that such an experiment installed in an even lower background environment (e.g., at SNOLAB) together with an exposure of 1000 kg⋅yr, should allow us to observe about 80 8B neutrino events after discrimination.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2018 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review D. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/K006444/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/N001141/1 Science and Technology Facilities Council ST/N000277/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/P00573X/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 16 Feb 2018 11:32 |
Last Modified: | 16 Feb 2018 11:32 |
Published Version: | https://doi.org/10.1103/PhysRevD.97.022003 |
Status: | Published |
Publisher: | American Physical Society |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevD.97.022003 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127559 |