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Amaré J, Cebrián S, Coarasa I, Cuesta C, García E, Martínez M, Oliván MA, Ortigoza Y, de Solórzano AO, Puimedón J, Salinas A, Sarsa ML, Villar P, Villar JA. First Results on Dark Matter Annual Modulation from the ANAIS-112 Experiment. Phys Rev Lett 2019; 123:031301. [PMID: 31386454 DOI: 10.1103/physrevlett.123.031301] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Indexed: 06/10/2023]
Abstract
ANAIS is a direct detection dark matter experiment aiming at the testing of the DAMA/LIBRA annual modulation result, which, for about two decades, has neither been confirmed nor ruled out by any other experiment in a model independent way. ANAIS-112, consisting of 112.5 kg of sodium iodide crystals, has been taking data at the Canfranc Underground Laboratory, Spain, since August 2017. This Letter presents the annual modulation analysis of 1.5 years of data, amounting to 157.55 kg yr. We focus on the model independent analysis searching for modulation and the validation of our sensitivity prospects. ANAIS-112 data are consistent with the null hypothesis (p values of 0.67 and 0.18 for [2-6] and [1-6] keV energy regions, respectively). The best fits for the modulation hypothesis are consistent with the absence of modulation (S_{m}=-0.0044±0.0058 cpd/kg/keV and -0.0015±0.0063 cpd/kg/keV, respectively). They are in agreement with our estimated sensitivity for the accumulated exposure, which supports our projected goal of reaching a 3σ sensitivity to the DAMA/LIBRA result in five years of data taking.
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Affiliation(s)
- J Amaré
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - S Cebrián
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - I Coarasa
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - C Cuesta
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - E García
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - M Martínez
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
- Fundación ARAID, Av. de Ranillas 1D, 50018 Zaragoza, Spain
| | - M A Oliván
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Y Ortigoza
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - A Ortiz de Solórzano
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - J Puimedón
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - A Salinas
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - M L Sarsa
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - P Villar
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
| | - J A Villar
- Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe s.n., 22880 Canfranc Estación, Huesca, Spain
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Bandac I, Borjabad S, Ianni A, Nuñez-Lagos R, Pérez C, Rodríguez S, Villar JA. Ultra-low background and environmental measurements at Laboratorio Subterráneo de Canfranc (LSC). Appl Radiat Isot 2017; 126:127-129. [PMID: 28279576 DOI: 10.1016/j.apradiso.2017.02.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 10/20/2022]
Abstract
To support the construction of experiments at the Laboratorio Subterráneo de Canfranc (LSC) in Spain, an Ultra-Low Background Service (ULBS) and a Copper Electroforming Service (CES) were created. The measurement technique employed at the ULBS is gamma spectroscopy with high purity germanium (HPGe) detectors. A new anti-radon system is being implemented. The main goal of CES is to obtain high-purity copper pieces. A new electroforming set-up inside LSC underground clean room is planned. Radon and environmental measurements at the LSC are presented. The ULBS and CES are reviewed.
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Affiliation(s)
- I Bandac
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe S/N 22880 Canfranc Estación, Huesca, Spain
| | - S Borjabad
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe S/N 22880 Canfranc Estación, Huesca, Spain.
| | - A Ianni
- Laboratorio Subterráneo de Canfranc, Paseo de los Ayerbe S/N 22880 Canfranc Estación, Huesca, Spain
| | - R Nuñez-Lagos
- Laboratorio de Bajas Actividades (LABAC), Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - C Pérez
- Laboratorio de Bajas Actividades (LABAC), Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - S Rodríguez
- Laboratorio de Bajas Actividades (LABAC), Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - J A Villar
- Laboratorio de Bajas Actividades (LABAC), Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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Arik M, Aune S, Barth K, Belov A, Borghi S, Bräuninger H, Cantatore G, Carmona JM, Cetin SA, Collar JI, Dafni T, Davenport M, Eleftheriadis C, Elias N, Ezer C, Fanourakis G, Ferrer-Ribas E, Friedrich P, Galán J, García JA, Gardikiotis A, Gazis EN, Geralis T, Giomataris I, Gninenko S, Gómez H, Gruber E, Guthörl T, Hartmann R, Haug F, Hasinoff MD, Hoffmann DHH, Iguaz FJ, Irastorza IG, Jacoby J, Jakovčić K, Karuza M, Königsmann K, Kotthaus R, Krčmar M, Kuster M, Lakić B, Laurent JM, Liolios A, Ljubičić A, Lozza V, Lutz G, Luzón G, Morales J, Niinikoski T, Nordt A, Papaevangelou T, Pivovaroff MJ, Raffelt G, Rashba T, Riege H, Rodríguez A, Rosu M, Ruz J, Savvidis I, Silva PS, Solanki SK, Stewart L, Tomás A, Tsagri M, van Bibber K, Vafeiadis T, Villar JA, Vogel JK, Yildiz SC, Zioutas K. Search for sub-eV mass solar axions by the CERN Axion Solar Telescope with 3He buffer gas. Phys Rev Lett 2011; 107:261302. [PMID: 22243149 DOI: 10.1103/physrevlett.107.261302] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Indexed: 05/31/2023]
Abstract
The CERN Axion Solar Telescope (CAST) has extended its search for solar axions by using (3)He as a buffer gas. At T=1.8 K this allows for larger pressure settings and hence sensitivity to higher axion masses than our previous measurements with (4)He. With about 1 h of data taking at each of 252 different pressure settings we have scanned the axion mass range 0.39 eV≲m(a)≲0.64 eV. From the absence of excess x rays when the magnet was pointing to the Sun we set a typical upper limit on the axion-photon coupling of g(aγ)≲2.3×10(-10) GeV(-1) at 95% C.L., the exact value depending on the pressure setting. Kim-Shifman-Vainshtein-Zakharov axions are excluded at the upper end of our mass range, the first time ever for any solar axion search. In the future we will extend our search to m(a)≲1.15 eV, comfortably overlapping with cosmological hot dark matter bounds.
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Affiliation(s)
- M Arik
- Dogus University, Istanbul, Turkey
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