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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

We calculate the scattering rate of sub-GeV dark matter in solid-state targets for spin-dependent dark matter -- nucleon interactions. For dark matter particles with mass below 100 MeV, the scattering occurs predominantly through incoherent…

High Energy Physics - Phenomenology · Physics 2025-06-16 Stefania Gori , Simon Knapen , Tongyan Lin , Pankaj Munbodh , Bethany Suter

Supersymmetric models with low electroweak fine-tuning contain light higgsinos with mass not too far from m_h\simeq 125 GeV, while other sparticles can be much heavier. In the R-parity conserving MSSM, the lightest neutralino is then a…

High Energy Physics - Phenomenology · Physics 2013-06-19 Howard Baer , Vernon Barger , Dan Mickelson , Xerxes Tata

We reexamine the model-independent data analysis methods for extracting properties of Weakly Interacting Massive Particles (WIMPs) by using data (measured recoil energies) from direct Dark Matter detection experiments directly and, as a…

High Energy Physics - Phenomenology · Physics 2015-05-20 Chung-Lin Shan

Spin-independent cross-section for neutralino dark matter scattering off nuclei is investigated in the NMSSM. Several classes of blind spots for direct detection of singlino-Higgsino dark matter are analytically identified, including such…

High Energy Physics - Phenomenology · Physics 2016-04-05 Marcin Badziak , Marek Olechowski , Paweł Szczerbiak

Direct detection of Weakly Interacting Massive Particle (WIMP) candidates of Dark Matter (DM) is studied within the context of a self-consistent truncated isothermal model of the finite-size dark halo of the Galaxy based on the "King model"…

Cosmology and Nongalactic Astrophysics · Physics 2014-01-03 Soumini Chaudhury , Pijushpani Bhattacharjee , Ramanath Cowsik

We compare updated predictions for the elastic scattering of supersymmetric neutralino dark matter with the improved experimental upper limit recently published by CDMS II. We take into account the possibility that the \pi-nucleon \Sigma…

High Energy Physics - Phenomenology · Physics 2010-04-06 John Ellis , Keith A. Olive , Yudi Santoso , Vassilis C. Spanos

Predicted rates for direct and indirect detection of dark-matter neutralinos depend in general on the spin content of the nucleon. Neutralinos that are predominantly $B$-ino are the likeliest candidates for detection via spin-dependent…

High Energy Physics - Phenomenology · Physics 2008-02-03 Marc Kamionkowski , Lawrence M. Krauss , M. Ted Ressell

A good particle candidate for Cold Dark Matter (CDM) is the supersymmetric neutralino or more generally a weakly interacting massive particle (WIMP). The expected interaction rate of WIMPs with the detector medium in the direct detection…

Instrumentation and Methods for Astrophysics · Physics 2010-02-17 V. Kozlov

We report results of a search for Weakly Interacting Massive Particles (WIMPS) with the silicon detectors of the CDMS II experiment. This blind analysis of 140.2 kg-days of data taken between July 2007 and September 2008 revealed three…

We consider the lightest supersymmetric particle (LSP), neutralino in minimal anomaly mediated supersymmetry breaking model (mAMSB) to be a possible candidate for weakly interacting massive particles (WIMP) or cold dark matter and…

High Energy Physics - Phenomenology · Physics 2013-06-28 Kamakshya Prasad Modak , Debasish Majumdar

Following our earlier work on the 3-dimensional effective velocity distribution of Galactic WIMPs (not only impinging on our detectors but also) scattering off target nuclei, in this paper, we demonstrate the normal and a "reverse" annual…

High Energy Physics - Phenomenology · Physics 2022-04-14 Chung-Lin Shan

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

We show how to include in the existing calculations for nuclei other than $^{129}$Xe, $^{131}$Xe, the corrections to the isovector coupling arising in chiral effective field theory recently found in Ref. \cite{Menendez1}. The dominant,…

Cosmology and Nongalactic Astrophysics · Physics 2013-04-26 M. Cannoni

We report the result of a blinded search for Weakly Interacting Massive Particles (WIMPs) using the majority of the SuperCDMS Soudan dataset. With an exposure of 1690 kg days, a single candidate event is observed, consistent with expected…

We consider the direct and indirect detection signatures of WIMPs \chi^0 in kinematic regimes with a heavier, but nearly degenerate, charged state \chi^{+-}. For small splittings of O(10) MeV, the scattering of WIMPs off nuclei may be…

High Energy Physics - Phenomenology · Physics 2009-01-09 Maxim Pospelov , Adam Ritz

SuperWeakly-Interacting Massive Particles (superWIMPs) produced in the late decays of other particles are well-motivated dark matter candidates and may be favored over standard Weakly-Interacting Massive Particles (WIMPs) by small scale…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jose A. R. Cembranos , Jonathan L. Feng , Arvind Rajaraman , Bryan T. Smith , Fumihiro Takayama

We revisit the uncertainties in the calculation of spin-independent scattering matrix elements for the scattering of WIMP dark matter particles on nuclear matter. In addition to discussing the uncertainties due to limitations in our…

High Energy Physics - Phenomenology · Physics 2018-11-29 John Ellis , Natsumi Nagata , Keith A. Olive

Traditional dark matter models, eg. WIMPs, assume dark matter is weakly coupled to the standard model so that elastic scattering between dark matter and baryons can be described perturbatively by Born approximation. Most direct detection…

High Energy Physics - Phenomenology · Physics 2021-12-03 Xingchen Xu , Glennys R. Farrar