Final results of the PICASSO dark matter search experiment
- NázevTitle
- Final results of the PICASSO dark matter search experimentFinal results of the PICASSO dark matter search experiment
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- E. Behnke, M. Besnier, P. Bhattacharjee, X. Dai, S. Pospíšil, I. Štekl
- DOIDOI
- 10.1016/j.astropartphys.2017.02.005
- Časopis / citaceJournal / citation
- Astroparticle Physics. 2017, 90 85-92. ISSN 0927-6505.
- RokYear
- 2017
- JazykLanguage
- eng
- WoSWoS
- 000399848600009
- ScopusScopus
- 2-s2.0-85014531208
- RIVRIV
- RIV/68407700:21670/17:00320275!RIV18-MSM-21670___
- ProjektProject
- Inženýrské aplikace fyziky mikrosvětaEngineering applications of microworld physics
AbstraktAbstract
The PICASSO dark matter search experiment operated an array of 32 superheated droplet detectors containing 3.0 kg of C4F10 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 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(SD)(p) = 132 x 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(SI)(p) = 4.86 x 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. (C) 2017 Elsevier B.V. All rights reserved.
The PICASSO dark matter search experiment operated an array of 32 superheated droplet detectors containing 3.0 kg of C4F10 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 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(SD)(p) = 132 x 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(SI)(p) = 4.86 x 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. (C) 2017 Elsevier B.V. All rights reserved.