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The DAMA/NaI and DAMA/LIBRA annual modulation data, which may be interpreted as a signal for the existence of weakly interacting dark matter (WIMPs) in our galactic halo, are examined in light of null results from other experiments. We use…

Astrophysics · Physics 2014-11-18 Christopher Savage , Graciela Gelmini , Paolo Gondolo , Katherine Freese

We show how constraints on the time integrated event rate from a given dark matter (DM) direct detection experiment can be used to set a stringent constraint on the amplitude of the annual modulation signal in another experiment. The method…

High Energy Physics - Phenomenology · Physics 2013-05-30 Juan Herrero-Garcia , Thomas Schwetz , Jure Zupan

The DAMA/NaI Collaboration has observed a 4-sigma C.L. model independent effect investigating the annual modulation signature in the counting rate of an NaI(Tl) set-up (total exposure of 57986 kg day) and the implications of this effect…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. Belli , R. Cerulli , N. Fornengo , S. Scopel

The signals expected in WIMP direct detection experiments depend on the ultra-local dark matter distribution. Observations probe the local density, circular speed and escape speed, while simulations find velocity distributions that deviate…

Cosmology and Nongalactic Astrophysics · Physics 2011-01-27 Anne M. Green

We present a systematic halo-independent analysis of available Weakly Interacting Massive Particles (WIMP) direct detection data within the framework of Inelastic Dark Matter (IDM). We show that, when the smallest number of assumptions is…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-03 Stefano Scopel , KookHyun Yoon

Direct detection experiments searching for weakly interacting massive particle (WIMP) dark matter typically use a simplified model of the Galactic halo to derive parameter constraints. However, there is strong evidence that this Standard…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-19 Bradley J. Kavanagh , Anne M. Green

We discuss the interpretation of the annual modulation signal seen in the DAMA experiment in terms of spin-independent elastic WIMP scattering. Taking into account channeling in the crystal as well as the spectral signature of the…

High Energy Physics - Phenomenology · Physics 2010-05-12 Malcolm Fairbairn , Thomas Schwetz

The original annual-modulation region, singled out by the DAMA/NaI experiment for direct detection of WIMPs, is extended by taking into account the uncertainties in the galactic astrophysical velocities. Also the effect due to a possible…

High Energy Physics - Phenomenology · Physics 2009-10-31 P. Belli , R. Bernabei , A. Bottino , F. Donato , N. Fornengo , D. Prosperi , S. Scopel

The relative sensitivity of different direct detection experiments depends sensitively on the astrophysical distribution and particle physics nature of dark matter, prohibiting a model-independent comparison. The situation changes…

High Energy Physics - Phenomenology · Physics 2018-06-13 Felix Kahlhoefer , Florian Reindl , Karoline Schäffner , Kai Schmidt-Hoberg , Sebastian Wild

The differential event rate in Weakly Interacting Massive Particle (WIMP) direct detection experiments depends on the local dark matter density and velocity distribution. Accurate modelling of the local dark matter distribution is therefore…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-02 Anne M Green

We analyze the annual-modulation effect, measured by the DAMA Collaboration with the new implementation of a further two-years running, in the context of a possible interpretation in terms of relic neutralinos. We impose over the set of…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Bottino , F. Donato , N. Fornengo , S. Scopel

The count rate of Weakly Interacting Massive Particle (WIMP) dark matter candidates in direct detection experiments experiences an annual modulation due to the Earth's motion around the Sun. In the standard isothermal halo model, the signal…

Astrophysics · Physics 2009-11-10 Matthew J. Lewis , Katherine Freese

The direction dependence of the event rate in WIMP direct detection experiments provides a powerful tool for distinguishing WIMP events from potential backgrounds. We use a variety of (non-parametric) statistical tests to examine the number…

Astrophysics · Physics 2010-11-19 Ben Morgan , Anne M. Green , Neil J. C. Spooner

Plasma dark matter, which arises in dissipative dark matter models, can give rise to large annual modulation signals from keV electron recoils. Previous work has argued that the DAMA annual modulation signal could have an explanation within…

High Energy Physics - Phenomenology · Physics 2018-09-13 R. Foot

The measurement of an annual modulation in the event rate of direct dark matter detection experiments is a powerful tool for dark matter discovery. Indeed, several experiments have already claimed such a discovery in the past decade. While…

Cosmology and Nongalactic Astrophysics · Physics 2020-05-05 Francis Froborg , Alan R Duffy

We show that compatibility between the DAMA modulation result (as well as less statistically significant excesses such as the CDMS Silicon effect and the excess claimed by CRESST) with constraints from other experiments can be achieved by…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-31 Stefano Scopel , Kook-Hyun Yoon , Jong-Hyun Yoon

We report a systematic study on the directional sensitivity of a direct dark matter detector that detects the polar angle of a recoiling nucleus. A weakly interacting massive particle (WIMP)-mass independent method is used to obtain the…

High Energy Physics - Phenomenology · Physics 2015-09-02 Jin Li

Direct detection experiments are poised to detect dark matter in the form of weakly interacting massive particles (WIMPs). The signals expected in these experiments depend on the ultra-local WIMP density and velocity distribution. Firstly…

Cosmology and Nongalactic Astrophysics · Physics 2012-02-14 Anne M. Green

WIMP direct detection experiments are just reaching the sensitivity required to detect galactic dark matter in the form of neutralinos. Data from these experiments are usually analysed under the simplifying assumption that the Milky Way…

Astrophysics · Physics 2008-11-26 Anne M Green