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An ever-increasing body of evidence suggests that weakly interacting massive particles (WIMPs) constitute the bulk of the matter in the Universe. We illustrate how experimental data, dimensional analysis and Standard Model particle physics…

Astrophysics · Physics 2007-05-23 F. Halzen

Weakly Interacting Massive Particles (WIMPs) are well-established dark matter candidates. WIMP interactions with sensitive detectors are expected to display a characteristic annual modulation in rate. We release a dataset spanning 3.4 years…

We report the results of a weakly-interacting massive particle (WIMP) dark matter search using the full 80.1\;live-day exposure of the first stage of the PandaX experiment (PandaX-I) located in the China Jin-Ping Underground Laboratory. The…

Multiple astrophysical and cosmological observations show that the majority of the matter in the universe is non-luminous. It is not made of known particles, and it is called dark matter. This is one of the few pieces of concrete…

High Energy Physics - Experiment · Physics 2020-01-01 Oliver Buchmueller , Caterina Doglioni , Lian-Tao Wang

An energy threshold of (220$\pm$10) eV was achieved at an efficiency of 50% with a four-channel ultra-low-energy germanium detector each with an active mass of 5 g\cite{wimppaper}. This provides a unique probe to WIMP dark matter with mass…

Astrophysics · Physics 2019-08-13 Shin-Ted Lin , H. T. Wong

The EDELWEISS collaboration has performed a direct search for WIMP dark matter using a 320 g heat-and-ionization cryogenic Ge detector operated in a low-background environment in the Laboratoire Souterrain de Modane. No nuclear recoils are…

In this thesis, we investigate various possibilities of Weakly Interacting Massive Particle (WIMP) dark matter (DM) and their implications. These possibilities are important because they challenge the viability of WIMP DM in light of tight…

High Energy Physics - Phenomenology · Physics 2024-03-04 Shivam Gola

The CDMS II experiment has observed three events which may have arisen from weakly interacting massive particle (WIMP) dark matter (DM) with mass of order 9 GeV colliding with nuclei. Although the implied WIMP parameter region seems to be…

High Energy Physics - Phenomenology · Physics 2013-08-01 Xiao-Gang He , Jusak Tandean

We perform a systematic study of the multi-wavelength signal induced by weakly interacting massive particle (WIMP) annihilations at the Galactic Center (GC). Referring to a generic WIMP dark matter (DM) scenario and depending on…

High Energy Physics - Phenomenology · Physics 2008-11-26 Marco Regis , Piero Ullio

We propose a new signature for weakly interacting massive particle (WIMP) dark matter, a spectral feature in the diffuse extragalactic gamma-ray radiation. This feature, a sudden drop of the gamma-ray intensity at an energy corresponding to…

Astrophysics · Physics 2010-04-06 Lars Bergstrom , Joakim Edsjo , Piero Ullio

The MAJORANA DEMONSTRATOR is an array of natural and enriched high purity germanium detectors that will search for the neutrinoless double-beta decay of 76-Ge and perform a search for weakly interacting massive particles (WIMPs) with masses…

Presently the CDMS-II collaboration's Weakly Interacting Massive Particle (WIMP) search at the Soudan Underground Laboratory sets the most stringent exclusion limits of any WIMP cold dark matter direct-detection experiment. To extend our…

An unbinned maximum likelihood analysis of CDMS low-energy data reveals a strong preference (5.7 sigma C.L.) for a model containing an exponential excess of events in the nuclear recoil band, when compared to the null hypothesis. We comment…

Cosmology and Nongalactic Astrophysics · Physics 2012-04-24 J. I. Collar , N. E. Fields

We perform a low-mass dark matter search using an exposure of 30\,kg$\times$yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-20 XENON100 Collaboration , E. Aprile , J. Aalbers , F. Agostini , M. Alfonsi , F. D. Amaro , M. Anthony , F. Arneodo , P. Barrow , L. Baudis , B. Bauermeister , M. L. Benabderrahmane , T. Berger , P. A. Breur , A. Brown , E. Brown S. Bruenner , G. Bruno , R. Budnik , A. Buss , L. Bütikofer , J. M. R. Cardoso , M. Cervantes , D. Cichon , D. Coderre , A. P. Colijn , J. Conrad , J. P. Cussonneau , M. P. Decowski , P. de Perio , P. Di Gangi , A. Di Giovanni , E. Duchovni , A. D. Ferella , A. Fieguth , D. Franco , W. Fulgione , M. Galloway , M. Garbini , C. Geis , L. W. Goetzke , Z. Greene , C. Grignon , E. Gross , C. Hasterok , E. Hogenbirk , R. Itay , B. Kaminsky , G. Kessler , A. Kish , H. Landsman , R. F. Lang , L. Levinson , M. Le Calloch , C. Levy , F. Linde , S. Lindemann , M. Lindner , J. A. M. Lopes , A. Lyashenko , A. Manfredini , T. Marrodán Undagoitia , J. Masbou , F. V. Massoli , D. Masson , D. Mayani , A. J. Melgarejo Fernandez , Y. Meng , M. Messina , K. Micheneau , B. Miguez , A. Molinario , M. Murra , J. Naganoma , U. Oberlack , S. E. A. Orrigo , P. Pakarha , B. Pelssers , R. Persiani , F. Piastra , J. Pienaar , G. Plante , N. Priel , L. Rauch , S. Reichard , C. Reuter , A. Rizzo , S. Rosendahl , N. Rupp , J. M. F. dos Santos , G. Sartorelli , M. Scheibelhut , S. Schindler , J. Schreiner , M. Schumann , L. Scotto Lavina , M. Selvi , P. Shagin , H. Simgen , A. Stein , D. Thers , A. Tiseni , G. Trinchero , C. D. Tunnell , M. von Sivers , R. Wall , H. Wang , M. Weber , Y. Wei , C. Weinheimer , J. Wulf , Y. Zhang

Using information from a recent dark matter symposium at Marina del Rey and from various publications in 2012 and 2013, we discuss the most recent evidence and constraints on low mass WIMPs. There are now five separate experimental limits…

High Energy Physics - Experiment · Physics 2013-08-16 David Cline

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…

We present the first search for low mass WIMPs using the Germanium bolometers of the EDELWEISS-III experiment. Upgrades to the detectors and the electronics enhance the background discrimination and the low energy sensitivity with respect…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 Thibault de Boissière

We report limits on annual modulation of the low-energy event rate from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Such a modulation could be produced by interactions from Weakly Interacting…

The direct-search experiment for dark matter performed by the CDMS II Collaboration has observed two candidate events. Although these events cannot be interpreted as significant evidence for the presence of weakly interacting massive…

High Energy Physics - Phenomenology · Physics 2010-05-07 Xiao-Gang He , Tong Li , Xue-Qian Li , Jusak Tandean , Ho-Chin Tsai