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We study the impact of the assumed velocity distribution of galactic dark matter particles on the interpretation of results from nuclear recoil detectors. By converting experimental data to variables that make the astrophysical unknowns…

高能物理 - 唯象学 · 物理学 2012-03-01 Mads T. Frandsen , Felix Kahlhoefer , Christopher McCabe , Subir Sarkar , Kai Schmidt-Hoberg

Dynamical dark matter (DDM) is an alternative framework for dark-matter physics in which the dark-matter candidate is an ensemble of constituent fields with differing masses, lifetimes, and cosmological abundances. In this framework, it is…

高能物理 - 唯象学 · 物理学 2013-05-30 Keith R. Dienes , Jason Kumar , Brooks Thomas

The next generation of ultralight dark matter (DM) direct detection experiments, which could confirm sub-eV bosons as the dominant source of DM, will feature multiple detectors operating at various terrestrial locations. As a result of the…

高能物理 - 唯象学 · 物理学 2021-05-05 Joshua W. Foster , Yonatan Kahn , Rachel Nguyen , Nicholas L. Rodd , Benjamin R. Safdi

Recently, the importance of the electronic many-body effect in the dark matter (DM) detection has been recognized and a coherent formulation of the DM-electron scattering in terms of the dielectric response of the target material has been…

高能物理 - 唯象学 · 物理学 2021-12-17 Zheng-Liang Liang , Chongjie Mo , Ping Zhang

The scattering rate at dark-matter direct-detection experiments should modulate annually due to the Earth's orbit around the Sun. The rate is typically thought to be extremized around June 1, when the relative velocity of the Earth with…

宇宙学与河外天体物理 · 物理学 2014-02-03 Samuel K. Lee , Mariangela Lisanti , Annika H. G. Peter , Benjamin R. Safdi

The signals in dark matter direct-detection experiments should exhibit modulation signatures due to the Earth's motion with respect to the Galactic dark matter halo. The annual and daily modulations, due to the Earth's revolution about the…

宇宙学与河外天体物理 · 物理学 2016-06-21 Vivian Britto , Joel Meyers

We discuss the formation of dark matter caustics, and their possible detection by future dark matter experiments. The annual modulation expected in the recoil rate measured by a dark matter detector is discussed. We consider the example of…

宇宙学与河外天体物理 · 物理学 2015-05-19 Aravind Natarajan

For many years annually modulating $\sim$ keV scintillations have been observed in the DAMA/NaI and DAMA/Libra experiments. A dark matter - electron scattering interpretation is now favoured given the stringent constraints on nuclear recoil…

高能物理 - 唯象学 · 物理学 2016-07-01 R. Foot

We derive constraints on the annual modulation signal in Dark Matter (DM) direct detection experiments in terms of the unmodulated event rate. A general bound independent of the details of DM distribution follows from the assumption that…

高能物理 - 唯象学 · 物理学 2015-06-03 Juan Herrero-Garcia , Thomas Schwetz , Jure Zupan

We show that the rate for dark matter-electron scattering in an arbitrary material is determined by an experimentally measurable quantity, the complex dielectric function, for any dark matter interaction that couples to electron density.…

高能物理 - 唯象学 · 物理学 2022-12-16 Yonit Hochberg , Yonatan Kahn , Noah Kurinsky , Benjamin V. Lehmann , To Chin Yu , Karl K. Berggren

Dark matter direct detection experiments are designed to look for the scattering of dark matter particles that are assumed to move with virial velocities $\sim 10^{-3}$. At these velocities, the energy deposition in the detector is large…

高能物理 - 唯象学 · 物理学 2022-08-12 Julien Billard , Matt Pyle , Surjeet Rajendran , Harikrishnan Ramani

Conventional dark matter direct detection experiments set stringent constraints on dark matter by looking for elastic scattering events between dark matter particles and nuclei in underground detectors. However these constraints weaken…

高能物理 - 唯象学 · 物理学 2017-11-21 Timon Emken , Chris Kouvaris

We investigate a possibility of neutralino dark matter (DM) direct detection in the future electron accelerators. That is counting of high p_T electron recoil events by neutralinos in halo. If selectron and neutralino masses would be…

高能物理 - 唯象学 · 物理学 2007-05-23 Junji Hisano , Minoru Nagai , Mihoko M. Nojiri , Masato Senami

Dark matter (DM) coupled to light mediators has been invoked to resolve the putative discrepancies between collisionless cold DM and galactic structure observations. However, $\gamma$-ray searches and the CMB strongly constrain such…

高能物理 - 唯象学 · 物理学 2018-06-27 Iason Baldes , Marco Cirelli , Paolo Panci , Kalliopi Petraki , Filippo Sala , Marco Taoso

We present some theoretical results relevant to the direct dark matter detection experiments, paying particular attention to directional experiments, i.e. experiments in which, not only the energy but the direction of the recoiling nucleus…

宇宙学与河外天体物理 · 物理学 2015-05-19 J. D. Vergados , Ch. C. Moustakidis

We study the effect of a long-range DM-nuclei interaction occurring via the exchange of a light mediator. We consider the main direct detection experiments: DAMA, CoGeNT, CRESST, CDMS and XENON100. We find that a long-range force is a…

高能物理 - 唯象学 · 物理学 2012-06-12 Paolo Panci

Contains a summary, current status and prospects for the direct detection of cold dark matter using diurnal modulation effects as presented at the ELAF 93, Mar del Plata Argentina. The potential advantages of using the Earth as an absorber…

天体物理学 · 物理学 2007-05-23 D. E. Di Gregorio , A. Gattone , H. Huck , A. O. Macchiavelli , S. Gil , J. Collar , F. T. Avignone

We propose a novel mechanism for dark matter to explain the observed annual modulation signal at DAMA/LIBRA which avoids existing constraints from every other dark matter direct detection experiment including CRESST, CDMS, and XENON10. The…

高能物理 - 唯象学 · 物理学 2010-10-07 Peter W. Graham , Roni Harnik , Surjeet Rajendran , Prashant Saraswat

A claim for evidence of dark matter interactions in the DAMA experiment has been recently reinforced. We employ a new type of germanium detector to conclusively rule out a standard isothermal galactic halo of Weakly Interacting Massive…

We use the moments of counts of neighbors as given by the Generalized Correlation Integrals, to study the clustering properties of Dark Matter Halos (DH) in Cold Dark Matter (CDM) and Cold+Hot Dark Matter (CHDM) models. We compare the…

天体物理学 · 物理学 2016-08-30 A. Campos , G. Yepes , A. Klypin , G. Murante , A. Provenzale , S. Borgani