Dark matter search results from the complete exposure of the PICO-60 C3F8 Bubble Chamber

PICO Collaboration

Dark matter search results from the complete exposure of the PICO-60 C₃F₈ Bubble Chamber

PICO Collaboration

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Final results are reported from operation of the PICO-60 C3F8 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the WIMP-proton spin-dependent cross section at 2.5 × 10⁻⁴¹ cm² for a 25 GeV WIMP, and improve on previous PICO results for 3–5 GeV WIMPs by an order of magnitude.

Original language	English (US)
Journal	Unknown Journal
State	Published - Feb 11 2019

ASJC Scopus subject areas

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@article{314ba86c4d0e42ff9c2bf51d20c8e904,

title = "Dark matter search results from the complete exposure of the PICO-60 C3F8 Bubble Chamber",

abstract = "Final results are reported from operation of the PICO-60 C3F8 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the WIMP-proton spin-dependent cross section at 2.5 × 10−41 cm2 for a 25 GeV WIMP, and improve on previous PICO results for 3–5 GeV WIMPs by an order of magnitude.",

author = "{PICO Collaboration} and C. Amole and M. Ardid and Arnquist, {I. J.} and Asner, {D. M.} and D. Baxter and E. Behnke and M. Bressler and B. Broerman and G. Cao and Chen, {C. J.} and U. Chowdhury and K. Clark and Collar, {J. I.} and Cooper, {P. S.} and Coutu, {C. B.} and C. Cowles and M. Crisler and G. Crowder and Cruz-Venegas, {N. A.} and Dahl, {C. E.} and M. Das and S. Fallows and J. Farine and I. Felis and R. Filgas and F. Girard and G. Giroux and J. Hall and C. Hardy and O. Harris and T. Hillier and Hoppe, {E. W.} and Jackson, {C. M.} and M. Jin and L. Klopfenstein and Krauss, {C. B.} and M. Laurin and I. Lawson and A. Leblanc and I. Levine and C. Licciardi and Lippincott, {W. H.} and B. Loer and F. Mamedov and P. Mitra and C. Moore and T. Nania and R. Neilson and Noble, {A. J.} and P. Oedekerk",

year = "2019",

month = feb,

day = "11",

language = "English (US)",

journal = "Free Radical Biology and Medicine",

issn = "0891-5849",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Dark matter search results from the complete exposure of the PICO-60 C3F8 Bubble Chamber

AU - PICO Collaboration

AU - Amole, C.

AU - Ardid, M.

AU - Arnquist, I. J.

AU - Asner, D. M.

AU - Baxter, D.

AU - Behnke, E.

AU - Bressler, M.

AU - Broerman, B.

AU - Cao, G.

AU - Chen, C. J.

AU - Chowdhury, U.

AU - Clark, K.

AU - Collar, J. I.

AU - Cooper, P. S.

AU - Coutu, C. B.

AU - Cowles, C.

AU - Crisler, M.

AU - Crowder, G.

AU - Cruz-Venegas, N. A.

AU - Dahl, C. E.

AU - Das, M.

AU - Fallows, S.

AU - Farine, J.

AU - Felis, I.

AU - Filgas, R.

AU - Girard, F.

AU - Giroux, G.

AU - Hall, J.

AU - Hardy, C.

AU - Harris, O.

AU - Hillier, T.

AU - Hoppe, E. W.

AU - Jackson, C. M.

AU - Jin, M.

AU - Klopfenstein, L.

AU - Krauss, C. B.

AU - Laurin, M.

AU - Lawson, I.

AU - Leblanc, A.

AU - Levine, I.

AU - Licciardi, C.

AU - Lippincott, W. H.

AU - Loer, B.

AU - Mamedov, F.

AU - Mitra, P.

AU - Moore, C.

AU - Nania, T.

AU - Neilson, R.

AU - Noble, A. J.

AU - Oedekerk, P.

PY - 2019/2/11

Y1 - 2019/2/11

N2 - Final results are reported from operation of the PICO-60 C3F8 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the WIMP-proton spin-dependent cross section at 2.5 × 10−41 cm2 for a 25 GeV WIMP, and improve on previous PICO results for 3–5 GeV WIMPs by an order of magnitude.

AB - Final results are reported from operation of the PICO-60 C3F8 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. The chamber was operated at thermodynamic thresholds as low as 1.2 keV without loss of stability. A new blind 1404-kg-day exposure at 2.45 keV threshold was acquired with approximately the same expected total background rate as the previous 1167-kg-day exposure at 3.3 keV. This increased exposure is enabled in part by a new optical tracking analysis to better identify events near detector walls, permitting a larger fiducial volume. These results set the most stringent direct-detection constraint to date on the WIMP-proton spin-dependent cross section at 2.5 × 10−41 cm2 for a 25 GeV WIMP, and improve on previous PICO results for 3–5 GeV WIMPs by an order of magnitude.

UR - http://www.scopus.com/inward/record.url?scp=85095286636&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85095286636&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85095286636

JO - Free Radical Biology and Medicine

JF - Free Radical Biology and Medicine

SN - 0891-5849

ER -