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

Abstract

New data are reported from the operation of a 2-liter C3F8 bubble chamber in the 2100 meter deep SNOLAB underground laboratory, with a total exposure of 211.5 kg-days at four different recoil energy thresholds ranging from 3.2 keV to 8.1 keV. These data show that C3F8 provides excellent electron recoil and alpha rejection capabilities at very low thresholds, including the rst 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 signicant sensitivity at low WIMP masses for spin-independent WIMP-nucleon scattering.

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1203852
Report Number(s):
PNNL-SA-108605
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Physical Review Letters, 114(23):Article No. 231302
Additional Journal Information:
Journal Name: Physical Review Letters, 114(23):Article No. 231302
Country of Publication:
United States
Language:
English

Citation Formats

Amole, C., Ardid, M., Asner, David M., Baxter, D., Behnke, E., Bhattacharjee, P. S., Borsodi, H., Bou-Cabo, M., Brice, S. J., Broemmelsiek, D., Clark, K., Collar, J. I., Cooper, P. S., Crisler, M., Dahl, C. E., Daley, S., Das, Madhusmita, Debris, F., Dhungana, N., Farine, J., Felis, I., Filgas, R., Fines-Neuschild, M., Girard, Francoise, Giroux, G., Hai, M., Hall, Jeter C., Harris, O., Jackson, C. M., Jin, M., Krauss, C. B., Lafreniere, M., Laurin, M., Lawson, I., Levine, I., Lippincott, W. H., Mann, E., Martin, J. P., Maurya, D., Mitra, Pitam, Neilson, R., Noble, A. J., Plante, A., Podviianiuk, R. B., Priya, S., Robinson, A. E., Ruschman, M., Scallon, O., Seth, S., Sonnenschein, Andrew, Starinski, N., Stekl, I., Vazquez-Jauregui, E., Wells, J., Wichoski, U., Zacek, V., and Zhang, J. Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.231302.
Amole, C., Ardid, M., Asner, David M., Baxter, D., Behnke, E., Bhattacharjee, P. S., Borsodi, H., Bou-Cabo, M., Brice, S. J., Broemmelsiek, D., Clark, K., Collar, J. I., Cooper, P. S., Crisler, M., Dahl, C. E., Daley, S., Das, Madhusmita, Debris, F., Dhungana, N., Farine, J., Felis, I., Filgas, R., Fines-Neuschild, M., Girard, Francoise, Giroux, G., Hai, M., Hall, Jeter C., Harris, O., Jackson, C. M., Jin, M., Krauss, C. B., Lafreniere, M., Laurin, M., Lawson, I., Levine, I., Lippincott, W. H., Mann, E., Martin, J. P., Maurya, D., Mitra, Pitam, Neilson, R., Noble, A. J., Plante, A., Podviianiuk, R. B., Priya, S., Robinson, A. E., Ruschman, M., Scallon, O., Seth, S., Sonnenschein, Andrew, Starinski, N., Stekl, I., Vazquez-Jauregui, E., Wells, J., Wichoski, U., Zacek, V., & Zhang, J. Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber. United States. doi:10.1103/PhysRevLett.114.231302.
Amole, C., Ardid, M., Asner, David M., Baxter, D., Behnke, E., Bhattacharjee, P. S., Borsodi, H., Bou-Cabo, M., Brice, S. J., Broemmelsiek, D., Clark, K., Collar, J. I., Cooper, P. S., Crisler, M., Dahl, C. E., Daley, S., Das, Madhusmita, Debris, F., Dhungana, N., Farine, J., Felis, I., Filgas, R., Fines-Neuschild, M., Girard, Francoise, Giroux, G., Hai, M., Hall, Jeter C., Harris, O., Jackson, C. M., Jin, M., Krauss, C. B., Lafreniere, M., Laurin, M., Lawson, I., Levine, I., Lippincott, W. H., Mann, E., Martin, J. P., Maurya, D., Mitra, Pitam, Neilson, R., Noble, A. J., Plante, A., Podviianiuk, R. B., Priya, S., Robinson, A. E., Ruschman, M., Scallon, O., Seth, S., Sonnenschein, Andrew, Starinski, N., Stekl, I., Vazquez-Jauregui, E., Wells, J., Wichoski, U., Zacek, V., and Zhang, J. Fri . "Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber". United States. doi:10.1103/PhysRevLett.114.231302.
@article{osti_1203852,
title = {Dark Matter Search Results from the PICO-2L C3F8 Bubble Chamber},
author = {Amole, C. and Ardid, M. and Asner, David M. and Baxter, D. and Behnke, E. and Bhattacharjee, P. S. and Borsodi, H. and Bou-Cabo, M. and Brice, S. J. and Broemmelsiek, D. and Clark, K. and Collar, J. I. and Cooper, P. S. and Crisler, M. and Dahl, C. E. and Daley, S. and Das, Madhusmita and Debris, F. and Dhungana, N. and Farine, J. and Felis, I. and Filgas, R. and Fines-Neuschild, M. and Girard, Francoise and Giroux, G. and Hai, M. and Hall, Jeter C. and Harris, O. and Jackson, C. M. and Jin, M. and Krauss, C. B. and Lafreniere, M. and Laurin, M. and Lawson, I. and Levine, I. and Lippincott, W. H. and Mann, E. and Martin, J. P. and Maurya, D. and Mitra, Pitam and Neilson, R. and Noble, A. J. and Plante, A. and Podviianiuk, R. B. and Priya, S. and Robinson, A. E. and Ruschman, M. and Scallon, O. and Seth, S. and Sonnenschein, Andrew and Starinski, N. and Stekl, I. and Vazquez-Jauregui, E. and Wells, J. and Wichoski, U. and Zacek, V. and Zhang, J.},
abstractNote = {New data are reported from the operation of a 2-liter C3F8 bubble chamber in the 2100 meter deep SNOLAB underground laboratory, with a total exposure of 211.5 kg-days at four different recoil energy thresholds ranging from 3.2 keV to 8.1 keV. These data show that C3F8 provides excellent electron recoil and alpha rejection capabilities at very low thresholds, including the rst 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 signicant sensitivity at low WIMP masses for spin-independent WIMP-nucleon scattering.},
doi = {10.1103/PhysRevLett.114.231302},
journal = {Physical Review Letters, 114(23):Article No. 231302},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {6}
}

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