First results from the DEAP-3600 dark matter search with argon at SNOLAB
Abstract
This paper reports the first results of a direct dark matter search with the DEAP-3600 single-phase liquid argon (LAr) detector. The experiment was performed 2 km underground at SNOLAB (Sudbury, Canada) utilizing a large target mass, with the LAr target contained in a spherical acrylic vessel of 3600 kg capacity. The LAr is viewed by an array of PMTs, which would register scintillation light produced by rare nuclear recoil signals induced by dark matter particle scattering. An analysis of 4.44 live days (fiducial exposure of 9.87 tonne-days) of data taken with the nearly full detector during the initial filling phase demonstrates the detector performance and the best electronic recoil rejection using pulse-shape discrimination in argon, with leakage (90% C.L.) between 16 and 33 keV. No candidate signal events are observed, which results in the leading limit on WIMP-nucleon spin-independent cross section on argon, cm for a 100 GeV/c WIMP mass (90% C.L.).
Cite
@article{arxiv.1707.08042,
title = {First results from the DEAP-3600 dark matter search with argon at SNOLAB},
author = {3600 Collaboration and P. -A. Amaudruz and M. Baldwin and M. Batygov and B. Beltran and C. E. Bina and D. Bishop and J. Bonatt and G. Boorman and M. G. Boulay and B. Broerman and T. Bromwich and J. F. Bueno and P. M. Burghardt and A. Butcher and B. Cai and S. Chan and M. Chen and R. Chouinard and B. T. Cleveland and D. Cranshaw and K. Dering and J. DiGioseffo and S. Dittmeier and F. A. Duncan and M. Dunford and A. Erlandson and N. Fatemighomi and S. Florian and A. Flower and R. J. Ford and R. Gagnon and P. Giampa and V. V. Golovko and P. Gorel and R. Gornea and E. Grace and K. Graham and E. Gulyev and R. Hakobyan and A. Hall and A. L. Hallin and M. Hamstra and P. J. Harvey and C. Hearns and C. J. Jillings and O. Kamaev and A. Kemp and M. Kuźniak and S. Langrock and F. La Zia and B. Lehnert and J. J. Lidgard and C. Lim and T. Lindner and Y. Linn and S. Liu and P. Majewski and R. Mathew and A. B. McDonald and T. McElroy and T. McGinn and J. B. McLaughlin and S. Mead and R. Mehdiyev and C. Mielnichuk and J. Monroe and A. Muir and P. Nadeau and C. Nantais and C. Ng and A. J. Noble and E. O'Dwyer and C. Ohlmann and K. Olchanski and K. S. Olsen and C. Ouellet and P. Pasuthip and S. J. M. Peeters and T. R. Pollmann and E. T. Rand and W. Rau and C. Rethmeier and F. Retière and N. Seeburn and B. Shaw and K. Singhrao and P. Skensved and B. Smith and N. J. T. Smith and T. Sonley and J. Soukup and R. Stainforth and C. Stone and V. Strickland and B. Sur and J. Tang and J. Taylor and L. Veloce and E. Vázquez-Jáuregui and J. Walding and M. Ward and S. Westerdale and E. Woolsey and J. Zielinski},
journal= {arXiv preprint arXiv:1707.08042},
year = {2018}
}
Comments
Accepted for publication in Physical Review Letters