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Your search keyword '"M. Fines-Neuschild"' showing total 2 results
Start Over Author "M. Fines-Neuschild" Journal physical review letters
2 results on '"M. Fines-Neuschild"'

1. Dark Matter Search Results from the PICO-2LC3F8Bubble Chamber

Author

R. Neilson, M. Lafrenière, N. Starinski, C. M. Jackson, P. S. Cooper, E. Vázquez-Jáuregui, A. E. Robinson, J. P. Martin, J. I. Collar, M. Hai, M. Fines-Neuschild, S. Daley, M. Laurin, M. Ruschman, M. Jin, K. Clark, O. Harris, V. Zacek, U. Wichoski, D. Baxter, O. Scallon, Shashank Priya, Daniel Broemmelsiek, I. Levine, J. Hall, J. Wells, M. Bou-Cabo, Francoise Girard, J. Farine, G. Giroux, P. S. Bhattacharjee, A. Plante, C. Amole, R. B. Podviianiuk, Madhusmita Das, S. J. Brice, Andrew Sonnenschein, A. J. Noble, S. Seth, David M. Asner, Ivan Felis, R. Filgas, M. Crisler, E. Behnke, C. E. Dahl, F. Debris, Pitam Mitra, N. Dhungana, Miguel Ardid, E. Mann, I. Lawson, Jie Zhang, C. B. Krauss, W. H. Lippincott, Deepam Maurya, H. Borsodi, and I. Stekl

Subjects
Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Dark matter, General Physics and Astronomy, 7. Clean energy, 01 natural sciences, Nuclear physics, Recoil, WIMP, Weakly interacting massive particles, DAMA/NaI, 0103 physical sciences, Bubble chamber, Neutron, Alpha decay, 010306 general physics
Abstract

New results are reported from the operation of the PICO-60 dark matter detector, a bubble chamber filled with 52 kg of C_{3}F_{8} located in the SNOLAB underground laboratory. As in previous PICO bubble chambers, PICO-60 C_{3}F_{8} 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} cm^{2} for a 30-GeV c^{-2} WIMP, more than 1 order of magnitude improvement from previous PICO results.

Published
2015

2. Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber.

Author

Amole C, Ardid M, Asner DM, Baxter D, Behnke E, Bhattacharjee P, Borsodi H, Bou-Cabo M, Brice SJ, Broemmelsiek D, Clark K, Collar JI, Cooper PS, Crisler M, Dahl CE, Daley S, Das M, Debris F, Dhungana N, Farine J, Felis I, Filgas R, Fines-Neuschild M, Girard F, Giroux G, Hai M, Hall J, Harris O, Jackson CM, Jin M, Krauss CB, Lafrenière M, Laurin M, Lawson I, Levine I, Lippincott WH, Mann E, Martin JP, Maurya D, Mitra P, Neilson R, Noble AJ, Plante A, Podviianiuk RB, Priya S, Robinson AE, Ruschman M, Scallon O, Seth S, Sonnenschein A, Starinski N, Štekl I, Vázquez-Jáuregui E, Wells J, Wichoski U, Zacek V, and Zhang J

Subjects
Acoustics instrumentation, Algorithms, Neutrons, Fluorocarbons chemistry, Models, Theoretical
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.

Published
2015
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