@article{e0a3299ee3d147be826e9ff66e8c3f4e,
title = "Dark Matter Search Results from the PICO-60 C3 F8 Bubble Chamber",
abstract = "New results are reported from the operation of the PICO-60 dark matter detector, a bubble chamber filled with 52 kg of C3F8 located in the SNOLAB underground laboratory. As in previous PICO bubble chambers, PICO-60 C3F8 exhibits excellent electron recoil and alpha decay rejection, and the observed multiple-scattering neutron rate indicates a single-scatter neutron background of less than one event per month. A blind analysis of an efficiency-corrected 1167-kg day exposure at a 3.3-keV thermodynamic threshold reveals no single-scattering nuclear recoil candidates, consistent with the predicted background. These results set the most stringent direct-detection constraint to date on the weakly interacting massive particle (WIMP)-proton spin-dependent cross section at 3.4×10-41 cm2 for a 30-GeV c-2 WIMP, more than 1 order of magnitude improvement from previous PICO results.",
author = "\{PICO Collaboration\} and C. Amole and M. Ardid and Arnquist, \{I. J.\} and Asner, \{D. M.\} and D. Baxter and E. Behnke and P. Bhattacharjee and H. Borsodi and M. Bou-Cabo and P. Campion and G. Cao and Chen, \{C. J.\} and U. Chowdhury and K. Clark and Collar, \{J. I.\} and Cooper, \{P. S.\} and M. Crisler and G. Crowder 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 O. Harris and Hoppe, \{E. W.\} and M. Jin and Krauss, \{C. B.\} and M. Laurin and I. Lawson and A. Leblanc and I. Levine and Lippincott, \{W. H.\} and F. Mamedov and D. Maurya and P. Mitra and T. Nania and R. Neilson and Noble, \{A. J.\} and S. Olson and A. Ortega and A. Plante and R. Podviyanuk and S. Priya and Robinson, \{A. E.\} and A. Roeder and Y. Yan",
note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",
year = "2017",
month = jun,
day = "23",
doi = "10.1103/PhysRevLett.118.251301",
language = "英语",
volume = "118",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "25",
}