Dark Matter Search with the DEAP-3600 Detector using the Profile Likelihood Ratio Method

Fuente: arXiv

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Auteurs principaux:	DEAP Collaboration, Adhikari, P., Ajaj, R., Alpízar-Venegas, M., Amaudruz, P. -A., Anstey, J., Auty, D. J., Baldwin, M., Batygov, M., Beltran, B., Bigentini, A., Bina, C. E., Bonivento, W., Boulay, M. G., Bueno, J. F., Burghardt, P. M., Butcher, A., Cadeddu, M., Cai, B., Cárdenas-Montes, M., Cavuoti, S., Chen, Y., Choudhary, S., Cleveland, B. T., Crampton, R., Daugherty, S., DelGobbo, P., Di Stefano, P., Dolganov, G., Doria, L., Duncan, F. A., Dunford, M., Ellingwood, E., Erlandson, A., Farahani, S. S., Fatemighomi, N., Fiorillo, G., Ford, R. J., Gahan, D., Gallacher, D., Garai, A., Abia, P. García, Garg, S., Giampa, P., Giménez-Alcázar, A., Goeldi, D., Gorel, P., Graham, K., Grobov, A., Hallin, A. L., Hamstra, M., Haskins, S., Hu, J., Hucker, J., Huff, D., Hugues, T., Ilyasov, A., Jigmeddorj, B., Jillings, C. J., Joy, A., Kaur, G., Kemp, A., Yazdi, M. Khoshraftar, Kuźniak, M., La Zia, F., Lai, M., Langrock, S., Lehnert, B., LePage-Bourbonnais, J., Lissia, M., Luzzi, L., Machulin, I., Majewski, P., Maru, A., Mason, J., McDonald, A. B., McElroy, T., McLaughlin, J. B., Mielnichuk, C., Mirasola, L., Moharana, A., Monroe, J., Murray, A., Needs, M., Ng, C., Oliviéro, G., Olszewski, M., Pal, S., Papi, D., Park, B., Perry, M., Pesudo, V., Pollmann, T. R., Rad, F., Rethmeier, C., Retière, F., García, I. Rodríguez, Roszkowski, L., Santorelli, R., Schuckman II, F. G., Seeburn, N., Seth, S., Shalamova, V., Skensved, P., Smirnova, T., Smith, N. J. T., Sobotkiewich, K., Sonley, T., Sosiak, J., Soukup, J., Stainforth, R., Stringer, M., Tang, J., Taylor, P., Turcotte-Tardif, R., Vázquez-Jáuregui, E., Díaz, G. Vera, Viel, S., Vyas, B., Walczak, M., Walding, J., Ward, M., Westerdale, S., Wormington, R., Zuñiga-Reyes, A.
Format:	Preprint
Publié:	2026
Sujets:	High Energy Physics - Experiment Cosmology and Nongalactic Astrophysics
Accès en ligne:	Acceder al recurso
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_version_	1866914393436979200
author	DEAP Collaboration Adhikari, P. Ajaj, R. Alpízar-Venegas, M. Amaudruz, P. -A. Anstey, J. Auty, D. J. Baldwin, M. Batygov, M. Beltran, B. Bigentini, A. Bina, C. E. Bonivento, W. Boulay, M. G. Bueno, J. F. Burghardt, P. M. Butcher, A. Cadeddu, M. Cai, B. Cárdenas-Montes, M. Cavuoti, S. Chen, Y. Choudhary, S. Cleveland, B. T. Crampton, R. Daugherty, S. DelGobbo, P. Di Stefano, P. Dolganov, G. Doria, L. Duncan, F. A. Dunford, M. Ellingwood, E. Erlandson, A. Farahani, S. S. Fatemighomi, N. Fiorillo, G. Ford, R. J. Gahan, D. Gallacher, D. Garai, A. Abia, P. García Garg, S. Giampa, P. Giménez-Alcázar, A. Goeldi, D. Gorel, P. Graham, K. Grobov, A. Hallin, A. L. Hamstra, M. Haskins, S. Hu, J. Hucker, J. Huff, D. Hugues, T. Ilyasov, A. Jigmeddorj, B. Jillings, C. J. Joy, A. Kaur, G. Kemp, A. Yazdi, M. Khoshraftar Kuźniak, M. La Zia, F. Lai, M. Langrock, S. Lehnert, B. LePage-Bourbonnais, J. Lissia, M. Luzzi, L. Machulin, I. Majewski, P. Maru, A. Mason, J. McDonald, A. B. McElroy, T. McLaughlin, J. B. Mielnichuk, C. Mirasola, L. Moharana, A. Monroe, J. Murray, A. Needs, M. Ng, C. Oliviéro, G. Olszewski, M. Pal, S. Papi, D. Park, B. Perry, M. Pesudo, V. Pollmann, T. R. Rad, F. Rethmeier, C. Retière, F. García, I. Rodríguez Roszkowski, L. Santorelli, R. Schuckman II, F. G. Seeburn, N. Seth, S. Shalamova, V. Skensved, P. Smirnova, T. Smith, N. J. T. Sobotkiewich, K. Sonley, T. Sosiak, J. Soukup, J. Stainforth, R. Stringer, M. Tang, J. Taylor, P. Turcotte-Tardif, R. Vázquez-Jáuregui, E. Díaz, G. Vera Viel, S. Vyas, B. Walczak, M. Walding, J. Ward, M. Westerdale, S. Wormington, R. Zuñiga-Reyes, A.
author_facet	DEAP Collaboration Adhikari, P. Ajaj, R. Alpízar-Venegas, M. Amaudruz, P. -A. Anstey, J. Auty, D. J. Baldwin, M. Batygov, M. Beltran, B. Bigentini, A. Bina, C. E. Bonivento, W. Boulay, M. G. Bueno, J. F. Burghardt, P. M. Butcher, A. Cadeddu, M. Cai, B. Cárdenas-Montes, M. Cavuoti, S. Chen, Y. Choudhary, S. Cleveland, B. T. Crampton, R. Daugherty, S. DelGobbo, P. Di Stefano, P. Dolganov, G. Doria, L. Duncan, F. A. Dunford, M. Ellingwood, E. Erlandson, A. Farahani, S. S. Fatemighomi, N. Fiorillo, G. Ford, R. J. Gahan, D. Gallacher, D. Garai, A. Abia, P. García Garg, S. Giampa, P. Giménez-Alcázar, A. Goeldi, D. Gorel, P. Graham, K. Grobov, A. Hallin, A. L. Hamstra, M. Haskins, S. Hu, J. Hucker, J. Huff, D. Hugues, T. Ilyasov, A. Jigmeddorj, B. Jillings, C. J. Joy, A. Kaur, G. Kemp, A. Yazdi, M. Khoshraftar Kuźniak, M. La Zia, F. Lai, M. Langrock, S. Lehnert, B. LePage-Bourbonnais, J. Lissia, M. Luzzi, L. Machulin, I. Majewski, P. Maru, A. Mason, J. McDonald, A. B. McElroy, T. McLaughlin, J. B. Mielnichuk, C. Mirasola, L. Moharana, A. Monroe, J. Murray, A. Needs, M. Ng, C. Oliviéro, G. Olszewski, M. Pal, S. Papi, D. Park, B. Perry, M. Pesudo, V. Pollmann, T. R. Rad, F. Rethmeier, C. Retière, F. García, I. Rodríguez Roszkowski, L. Santorelli, R. Schuckman II, F. G. Seeburn, N. Seth, S. Shalamova, V. Skensved, P. Smirnova, T. Smith, N. J. T. Sobotkiewich, K. Sonley, T. Sosiak, J. Soukup, J. Stainforth, R. Stringer, M. Tang, J. Taylor, P. Turcotte-Tardif, R. Vázquez-Jáuregui, E. Díaz, G. Vera Viel, S. Vyas, B. Walczak, M. Walding, J. Ward, M. Westerdale, S. Wormington, R. Zuñiga-Reyes, A.
contents	We present here a search for WIMP dark matter using 790.8 live-days of data collected with 3269 kg of liquid argon (1266 kg fiducial) by the DEAP-3600 detector at SNOLAB, using the Profile Likelihood Ratio method. The likelihood model is based on three parameters: estimated energy, pulse-shape discrimination parameter, and reconstructed position within the detector. Using this method, the expected signal sensitivity of DEAP-3600 benefits from an increased fiducial volume and improved event selection acceptance. Alpha-decays from a small number of dust particulates circulating within the liquid argon target are the dominant source of background events and limit the sensitivity of this search. This result provides improved exclusion upper limits on the WIMP-nucleon spin-independent cross section on liquid argon for WIMP masses between 20 GeV/$c^{2}$ and 100 GeV/$c^{2}$. At 100 GeV/$c^{2}$ the observed limit is 3.4 $\times$ 10$^{-45}$ cm$^2$ at 90% confidence level.
format	Preprint
id	arxiv_https___arxiv_org_abs_2603_13965
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Dark Matter Search with the DEAP-3600 Detector using the Profile Likelihood Ratio Method DEAP Collaboration Adhikari, P. Ajaj, R. Alpízar-Venegas, M. Amaudruz, P. -A. Anstey, J. Auty, D. J. Baldwin, M. Batygov, M. Beltran, B. Bigentini, A. Bina, C. E. Bonivento, W. Boulay, M. G. Bueno, J. F. Burghardt, P. M. Butcher, A. Cadeddu, M. Cai, B. Cárdenas-Montes, M. Cavuoti, S. Chen, Y. Choudhary, S. Cleveland, B. T. Crampton, R. Daugherty, S. DelGobbo, P. Di Stefano, P. Dolganov, G. Doria, L. Duncan, F. A. Dunford, M. Ellingwood, E. Erlandson, A. Farahani, S. S. Fatemighomi, N. Fiorillo, G. Ford, R. J. Gahan, D. Gallacher, D. Garai, A. Abia, P. García Garg, S. Giampa, P. Giménez-Alcázar, A. Goeldi, D. Gorel, P. Graham, K. Grobov, A. Hallin, A. L. Hamstra, M. Haskins, S. Hu, J. Hucker, J. Huff, D. Hugues, T. Ilyasov, A. Jigmeddorj, B. Jillings, C. J. Joy, A. Kaur, G. Kemp, A. Yazdi, M. Khoshraftar Kuźniak, M. La Zia, F. Lai, M. Langrock, S. Lehnert, B. LePage-Bourbonnais, J. Lissia, M. Luzzi, L. Machulin, I. Majewski, P. Maru, A. Mason, J. McDonald, A. B. McElroy, T. McLaughlin, J. B. Mielnichuk, C. Mirasola, L. Moharana, A. Monroe, J. Murray, A. Needs, M. Ng, C. Oliviéro, G. Olszewski, M. Pal, S. Papi, D. Park, B. Perry, M. Pesudo, V. Pollmann, T. R. Rad, F. Rethmeier, C. Retière, F. García, I. Rodríguez Roszkowski, L. Santorelli, R. Schuckman II, F. G. Seeburn, N. Seth, S. Shalamova, V. Skensved, P. Smirnova, T. Smith, N. J. T. Sobotkiewich, K. Sonley, T. Sosiak, J. Soukup, J. Stainforth, R. Stringer, M. Tang, J. Taylor, P. Turcotte-Tardif, R. Vázquez-Jáuregui, E. Díaz, G. Vera Viel, S. Vyas, B. Walczak, M. Walding, J. Ward, M. Westerdale, S. Wormington, R. Zuñiga-Reyes, A. High Energy Physics - Experiment Cosmology and Nongalactic Astrophysics We present here a search for WIMP dark matter using 790.8 live-days of data collected with 3269 kg of liquid argon (1266 kg fiducial) by the DEAP-3600 detector at SNOLAB, using the Profile Likelihood Ratio method. The likelihood model is based on three parameters: estimated energy, pulse-shape discrimination parameter, and reconstructed position within the detector. Using this method, the expected signal sensitivity of DEAP-3600 benefits from an increased fiducial volume and improved event selection acceptance. Alpha-decays from a small number of dust particulates circulating within the liquid argon target are the dominant source of background events and limit the sensitivity of this search. This result provides improved exclusion upper limits on the WIMP-nucleon spin-independent cross section on liquid argon for WIMP masses between 20 GeV/$c^{2}$ and 100 GeV/$c^{2}$. At 100 GeV/$c^{2}$ the observed limit is 3.4 $\times$ 10$^{-45}$ cm$^2$ at 90% confidence level.
title	Dark Matter Search with the DEAP-3600 Detector using the Profile Likelihood Ratio Method
topic	High Energy Physics - Experiment Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2603.13965