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We construct the first comprehensive radioactive background model for a dark matter search with charge-coupled devices (CCDs). We leverage the well-characterized depth and energy resolution of the DAMIC at SNOLAB detector and a detailed…

The CRESST-II collaboration have announced evidence for the direct detection of dark matter in 730 kg-days exposure of a CaWO$_4$ target. We examine these new results, along with DAMA and CoGeNT data, in the context of the mirror dark…

High Energy Physics - Phenomenology · Physics 2015-06-04 R. Foot

Line intensity mapping (LIM) can provide a powerful means to constrain the theory of gravity and the nature of dark energy at low and high redshifts by mapping the large-scale structure (LSS) over many redshift epochs. In this paper, we…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-18 Azadeh Moradinezhad Dizgah , Emilio Bellini , Garrett K. Keating

The XENON100 experiment has recently completed a dark matter run with 100.9 live-days of data, taken from January to June 2010. Events in a 48kg fiducial volume in the energy range between 8.4 and 44.6 keVnr have been analyzed. A total of…

The cross-correlation of a foreground density field with two different background convergence fields can be used to measure cosmographic distance ratios and constrain dark energy parameters. We investigate the possibility of performing such…

Cosmology and Nongalactic Astrophysics · Physics 2015-11-11 Alkistis Pourtsidou , David Bacon , Robert Crittenden

Mirror dark matter provides a simple framework for which to explain the DAMA/Libra annual modulation signal consistently with the null results of the other direct detection experiments. The simplest possibility involves ordinary matter…

Astrophysics · Physics 2010-04-21 Paolo Ciarcelluti , Robert Foot

We have developed ultra-low-background NaI(Tl) crystals to reproduce the DAMA results with the ultimate goal of achieving purity levels that are comparable to or better than those of the DAMA/LIBRA crystals. Even though the achieved…

Instrumentation and Methods for Astrophysics · Physics 2017-08-02 G. Adhikari , P. Adhikari , C. Ha , E. J. Jeon , N. Y. Kim , Y. D. Kim , S. Y. Kong , H. S. Lee , S. Y. Oh , J. S. Park , K. S. Park

If dark matter is composed of new fundamental particles, Earth's orbital motion around the Sun may induce an annual modulation in the rate at which these particles interact in a terrestrial detector. The DAMA collaboration has identified at…

High Energy Physics - Phenomenology · Physics 2021-10-27 Douglas Q. Adams , Sunniva Jacobsen , Chris Kelso

The DAMA dark matter search experiment observes a statistically significant percent-level variation of its low-energy count rate with a period of one year. In this note we recall some of the arguments which challenge the hypothesis that the…

High Energy Physics - Phenomenology · Physics 2012-05-17 Josef Pradler

We report on the search for weakly interacting massive particle (WIMP) dark matter candidates in the galactic halo that interact with sodium and iodine nuclei in the COSINE-100 experiment and produce energetic electrons that accompany…

We present cosmological perturbation theory in neutrino probe interacting dark-energy models, and calculate cosmic microwave background anisotropies and matter power spectrum. In these models, the evolution of the mass of neutrinos is…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yong-Yeon Keum

At present the results in the field of direct dark matter search are in tension: the positive claim of DAMA/LIBRA versus null results from other experiments. However, the comparison of the results of different experiments involves model…

Instrumentation and Methods for Astrophysics · Physics 2017-10-11 G. Angloher , P. Carniti , L. Cassina , L. Gironi , C. Gotti , A. Gütlein , D. Hauff , M. Maino , S. S. Nagorny , L. Pagnanini , G. Pessina , F. Petricca , S. Pirro , F. Pröbst , F. Reindl , K. Schäffner , J. Schieck , W. Seidel

Many experiments that aim at the direct detection of Dark Matter are able to distinguish a dominant background from the expected feeble signals, based on some measured discrimination parameter. We develop a statistical model for such…

Unveiling the nature of cosmic dark matter (DM) is an urgent issue in cosmology. Here we make use of a strategy based on the search for the imprints left on the cosmic microwave background temperature and polarization spectra by the energy…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Carmelo Evoli , Stefania Pandolfi , Andrea Ferrara

We propose the idea of "Earth Shielding" to reject cosmic-ray backgrounds, in the search for boosted dark matter at surface neutrino detectors, resulting in the enhancement of the signal-to-background ratio. The identification of…

High Energy Physics - Phenomenology · Physics 2018-09-26 Doojin Kim , Kyoungchul Kong , Jong-Chul Park , Seodong Shin

The aim of the current work is a detailed time-series analysis of the data from Dark Matter direct detection experiments as well as related datasets. We examine recent claims that the cosmic ray muon flux can be responsible for generating…

High Energy Physics - Phenomenology · Physics 2015-03-19 Spencer Chang , Josef Pradler , Itay Yavin

Scintillating calorimeters are cryogenic detectors combining a measurement of scintillation with one of phonons to provide particle identification. In view of developing alkali halide devices of this type able to check the DAMA/LIBRA claim…

Instrumentation and Detectors · Physics 2015-04-08 Patrick Nadeau , Michael Clark , P. C. F. Di Stefano , J. -C. Lanfranchi , S. Roth , M. von Sivers , Itay Yavin

We use the latest cosmic microwave background (CMB) observations to provide updated constraints on the dark matter lifetime as well as on p-wave suppressed annihilation cross sections in the 1 MeV to 1 TeV mass range. In contrast to…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-17 Roberta Diamanti , Laura Lopez-Honorez , Olga Mena , Sergio Palomares-Ruiz , Aaron C. Vincent

Dark matter induced event rate in an Earth-based detector is predicted to show an annual modulation as a result of the Earth's orbital motion around the Sun. We searched for this modulation signature using the ionization signal of the…

High Energy Physics - Experiment · Physics 2024-11-25 50 Collaboration , P. Agnes , I. F. M. Albuquerque , T. Alexander , A. K. Alton , M. Ave , H. O. Back , G. Batignani , K. Biery , V. Bocci , W. M. Bonivento , B. Bottino , S. Bussino , M. Cadeddu , M. Cadoni , F. Calaprice , A. Caminata , M. D. Campos , N. Canci , M. Caravati , N. Cargioli , M. Cariello , M. Carlini , V. Cataudella , P. Cavalcante , S. Cavuoti , S. Chashin , A. Chepurnov , C. Cicalò , G. Covone , D. D'Angelo , S. Davini , A. De Candia , S. De Cecco , G. De Filippis , G. De Rosa , A. V. Derbin , A. Devoto , M. D'Incecco , C. Dionisi , F. Dordei , M. Downing , D. D'Urso , M. Fairbairn , G. Fiorillo , D. Franco , F. Gabriele , C. Galbiati , C. Ghiano , C. Giganti , G. K. Giovanetti , A. M. Goretti , G. Grilli di Cortona , A. Grobov , M. Gromov , M. Guan , M. Gulino , B. R. Hackett , K. Herner , T. Hessel , B. Hosseini , F. Hubaut , T. Hugues , E. V. Hungerford , An. Ianni , V. Ippolito , K. Keeter , C. L. Kendziora , M. Kimura , I. Kochanek , D. Korablev , G. Korga , A. Kubankin , M. Kuss , M. Kuźniak , M. La Commara , M. Lai , X. Li , M. Lissia , G. Longo , O. Lychagina , I. N. Machulin , L. P. Mapelli , S. M. Mari , J. Maricic , A. Messina , R. Milincic , J. Monroe , M. Morrocchi , X. Mougeot , V. N. Muratova , P. Musico , A. O. Nozdrina , A. Oleinik , F. Ortica , L. Pagani , M. Pallavicini , L. Pandola , E. Pantic , E. Paoloni , K. Pelczar , N. Pelliccia , S. Piacentini , A. Pocar , D. M. Poehlmann , S. Pordes , S. S. Poudel , P. Pralavorio , D. D. Price , F. Ragusa , M. Razeti , A. Razeto , A. L. Renshaw , M. Rescigno , J. Rode , A. Romani , D. Sablone , O. Samoylov , E. Sandford , W. Sands , S. Sanfilippo , C. Savarese , B. Schlitzer , D. A. Semenov , A. Shchagin , A. Sheshukov , M. D. Skorokhvatov , O. Smirnov , A. Sotnikov , S. Stracka , Y. Suvorov , R. Tartaglia , G. Testera , A. Tonazzo , E. V. Unzhakov , A. Vishneva , R. B. Vogelaar , M. Wada , H. Wang , Y. Wang , S. Westerdale , M. M. Wojcik , X. Xiao , C. Yang , G. Zuzel

We report on several features present in the energy spectrum from an ultra low-noise germanium detector operated at 2,100 m.w.e. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for…

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