Journal article
Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber
Physical review letters, v 114(23), pp 231302-231302
12 Jun 2015
PMID: 26196790
Abstract
New data are reported from the operation of a 2 liter C3F8 bubble chamber in the SNOLAB underground laboratory, with a total exposure of 211.5 kg days at four different energy thresholds below 10 keV. These data show that C3F8 provides excellent electron-recoil and alpha rejection capabilities at very low thresholds. The chamber exhibits an electron-recoil sensitivity of <3.5×10(-10) and an alpha rejection factor of >98.2%. These data also include the first observation of a dependence of acoustic signal on alpha energy. Twelve single nuclear recoil event candidates were observed during the run. The candidate events exhibit timing characteristics that are not consistent with the hypothesis of a uniform time distribution, and no evidence for a dark matter signal is claimed. These data provide the most sensitive direct detection constraints on WIMP-proton spin-dependent scattering to date, with significant sensitivity at low WIMP masses for spin-independent WIMP-nucleon scattering.
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Details
- Title
- Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber
- Creators
- C Amole - Queen's UniversityM Ardid - Universitat Politècnica de ValènciaD M Asner - Pacific Northwest National LaboratoryD Baxter - Northwestern UniversityE Behnke - Indiana UniversityP Bhattacharjee - Saha Institute of Nuclear PhysicsH Borsodi - Indiana UniversityM Bou-Cabo - Universitat Politècnica de ValènciaS J Brice - FermilabD Broemmelsiek - FermilabK Clark - University of TorontoJ I Collar - University of ChicagoP S Cooper - FermilabM Crisler - FermilabC E Dahl - Northwestern UniversityS Daley - Queen's UniversityM Das - Saha Institute of Nuclear PhysicsF Debris - University of MontrealN Dhungana - Laurentian UniversityJ Farine - Laurentian UniversityI Felis - Universitat Politècnica de València, IGIC, 46730 Gandia, SpainR Filgas - Czech Technical University in PragueM Fines-Neuschild - University of MontrealF Girard - University of MontrealG Giroux - Queen's UniversityM Hai - University of ChicagoJ Hall - Pacific Northwest National LaboratoryO Harris - Indiana UniversityC M Jackson - Université de MontréalM Jin - Northwestern UniversityC B Krauss - University of AlbertaM Lafrenière - University of MontrealM Laurin - University of MontrealI Lawson - Laurentian UniversityI Levine - Indiana UniversityW H Lippincott - FermilabE Mann - Indiana UniversityJ P Martin - Université de MontréalD Maurya - Virginia TechP Mitra - University of AlbertaR Neilson - University of ChicagoA J Noble - Queen's UniversityA Plante - University of MontrealR B Podviianiuk - Laurentian UniversityS Priya - Virginia TechA E Robinson - University of ChicagoM Ruschman - FermilabO Scallon - Laurentian UniversityS Seth - Saha Institute of Nuclear PhysicsA Sonnenschein - FermilabN Starinski - University of MontrealI Štekl - Czech Technical University in PragueE Vázquez-Jáuregui - National Autonomous University of MexicoJ Wells - Indiana UniversityU Wichoski - Laurentian UniversityV Zacek - University of MontrealJ Zhang - Northwestern UniversityPICO Collaboration
- Publication Details
- Physical review letters, v 114(23), pp 231302-231302
- Publisher
- Cold Spring Harbor Press
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Accelerated Career Entry Bachelor of Science in Nursing (BSN); Chemical and Biological Engineering
- Web of Science ID
- WOS:000355977000001
- Scopus ID
- 2-s2.0-84935872353
- Other Identifier
- 991019168456004721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Multidisciplinary