Search for low-mass WIMPs in a 0.6 kg day exposure of the DAMIC experiment at SNOLAB

Autor:	Aguilar-Arevalo, A., Amidei, D., Bertou, X., Butner, M., Cancelo, G., Vázquez, A. Castañeda, Vergara, B. A. Cervantes, Chavarria, A. E., Chavez, C. R., Neto, J. R. T. de Mello, D'Olivo, J. C., Estrada, J., Moroni, G. Fernandez, Gaïor, R., Guandincerri, Y., Torres, K. P. Hernández, Izraelevitch, F., Kavner, A., Kilminster, B., Lawson, I., Letessier-Selvon, A., Liao, J., Molina, J., Peña, J. R., Privitera, P., Ramanathan, K., Sarkis, Y., Schwarz, T., Sengul, C., Settimo, M., Haro, M. Sofo, Thomas, R., Tiffenberg, J., Tiouchichine, E., Machado, D. Torres, Trillaud, F., You, X., Zhou, J.
Rok vydání:	2016
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology Physics - Instrumentation and Detectors
Zdroj:	Phys. Rev. D 94, 082006 (2016)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.94.082006
Popis:	We present results of a dark matter search performed with a 0.6 kg day exposure of the DAMIC experiment at the SNOLAB underground laboratory. We measure the energy spectrum of ionization events in the bulk silicon of charge-coupled devices down to a signal of 60 eV electron equivalent. The data are consistent with radiogenic backgrounds, and constraints on the spin-independent WIMP-nucleon elastic-scattering cross section are accordingly placed. A region of parameter space relevant to the potential signal from the CDMS-II Si experiment is excluded using the same target for the first time. This result obtained with a limited exposure demonstrates the potential to explore the low-mass WIMP region (<10 GeV/$c^{2}$) of the upcoming DAMIC100, a 100 g detector currently being installed in SNOLAB. Comment: 11 pages, 11 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1607.07410 Zobrazit plný text záznamu View this record from Arxiv