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Final results of the PICASSO dark matter search experiment
- Source :
- Astroparticle Physics. 90:85-92
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- The PICASSO dark matter search experiment operated an array of 32 superheated droplet detectors containing 3.0 kg of C$_{4}$F$_{10}$ and collected an exposure of 231.4 kgd at SNOLAB between March 2012 and January 2014. We report on the final results of this experiment which includes for the first time the complete data set and improved analysis techniques including \mbox{acoustic} localization to allow fiducialization and removal of higher activity regions within the detectors. No signal consistent with dark matter was observed. We set limits for spin-dependent interactions on protons of $\sigma_p^{SD}$~=~1.32~$\times$~10$^{-2}$~pb (90\%~C.L.) at a WIMP mass of 20 GeV/c$^{2}$. In the spin-independent sector we exclude cross sections larger than $\sigma_p^{SI}$~=~4.86~$\times$~10$^{-5 }$~pb~(90\% C.L.) in the region around 7 GeV/c$^{2}$. The pioneering efforts of the PICASSO experiment have paved the way forward for a next generation detector incorporating much of this technology and experience into larger mass bubble chambers.<br />Comment: 24 pages, 7 figures
- Subjects :
- Physics
Particle physics
Complete data
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Physics - Instrumentation and Detectors
010308 nuclear & particles physics
Dark matter
Detector
Bubble nucleation
FOS: Physical sciences
Astronomy and Astrophysics
Instrumentation and Detectors (physics.ins-det)
01 natural sciences
High Energy Physics - Experiment
Nuclear physics
High Energy Physics - Experiment (hep-ex)
WIMP
0103 physical sciences
PICASSO
010306 general physics
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- ISSN :
- 09276505
- Volume :
- 90
- Database :
- OpenAIRE
- Journal :
- Astroparticle Physics
- Accession number :
- edsair.doi.dedup.....d084e588ab6446312f81f42008cdb4c5