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The CoGeNT collaboration has reported evidence of an annual modulation in its first fifteen months of data. Here we compare the amplitude and phase of this signal to the modulation observed by the DAMA collaboration, assuming that both…

High Energy Physics - Phenomenology · Physics 2011-09-14 Christopher McCabe

DAMA observes an annual modulation in their event rate, as might be expected from dark matter scatterings, while CoGeNT has reported evidence for a similar modulation. The simplest interpretation of these findings in terms of dark…

High Energy Physics - Phenomenology · Physics 2011-09-15 Mads T. Frandsen , Felix Kahlhoefer , John March-Russell , Christopher McCabe , Matthew McCullough , Kai Schmidt-Hoberg

In this paper, we study the recent excess of low energy events observed by the CoGeNT collaboration, and discuss the possibility that these events originate from the elastic scattering of a light (m_DM ~ 5-10 GeV) dark matter particle. We…

High Energy Physics - Phenomenology · Physics 2014-11-20 A. Liam Fitzpatrick , Dan Hooper , Kathryn M. Zurek

Recently, the CoGeNT collaboration presented a positive signal for an annual modulation in their data set. In light of the long standing annual modulation signal in DAMA/LIBRA, we analyze the compatibility of both of these signal within the…

High Energy Physics - Phenomenology · Physics 2012-06-26 Thomas Schwetz , Jure Zupan

We investigate the question of whether the recent modulation signal claimed by CoGeNT is best explained by the dark matter (DM) hypothesis from a Bayesian model comparison perspective. We consider five phenomenological explanations for the…

High Energy Physics - Phenomenology · Physics 2015-06-03 Chiara Arina , Jan Hamann , Roberto Trotta , Yvonne Y Y Wong

We explore the dark matter interpretation of the anomalies claimed by the DAMA and CoGeNT experiments, in conjunction with the various null direct-detection experiments. An independent analysis of the CoGeNT data is employed and several…

High Energy Physics - Phenomenology · Physics 2015-05-28 Marco Farina , Duccio Pappadopulo , Alessandro Strumia , Tomer Volansky

We analyze the recently released CoGeNT data with a focus on their time-dependent properties. Using various statistical techniques, we confirm the presence of modulation in the data, and find a significant component at high (E_{ee} > 1.5$…

High Energy Physics - Phenomenology · Physics 2013-05-30 Patrick J. Fox , Joachim Kopp , Mariangela Lisanti , Neal Weiner

It has previously been shown that the excess of events reported by the CoGeNT collaboration could be generated by elastically scattering dark matter particles with a mass of approximately 5-15 GeV. This mass range is very similar to that…

High Energy Physics - Phenomenology · Physics 2011-02-18 Chris Kelso , Dan Hooper

The long-standing model-independent annual modulation effect measured by the DAMA Collaboration, which fulfills all the requirements of a dark matter annual modulation signature, and the new result by the CoGeNT experiment that shows a…

High Energy Physics - Phenomenology · Physics 2012-01-04 P. Belli , R. Bernabei , A. Bottino , F. Cappella , R. Cerulli , N. Fornengo , S. Scopel

In this paper, we study the recent excess of low energy events observed by the CoGeNT collaboration and the annual modulation reported by the DAMA/LIBRA collaboration, and discuss whether these signals could both be the result of the same…

High Energy Physics - Phenomenology · Physics 2010-12-24 Dan Hooper , J. I. Collar , Jeter Hall , Dan McKinsey , Chris Kelso

The CoGeNT collaboration has recently presented the results of their first 15 months of data, including the measurement of the spectrum of nuclear recoil candidate events, and the time variation of those events. These results appear…

High Energy Physics - Phenomenology · Physics 2013-05-29 Dan Hooper , Chris Kelso

Underground searches for dark matter involve a complicated interplay of particle physics, nuclear physics, atomic physics and astrophysics. We attempt to remove the uncertainties associated with astrophysics by developing the means to map…

High Energy Physics - Phenomenology · Physics 2011-11-04 Patrick J. Fox , Jia Liu , Neal Weiner

Three dark matter direct detection experiments (DAMA/LIBRA, CoGeNT, and CRESST-II) have each reported signals which are not consistent with known backgrounds, but resemble that predicted for a dark matter particle with a mass of roughly…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-30 Chris Kelso , Dan Hooper , Matthew R. Buckley

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…

High Energy Physics - Phenomenology · Physics 2010-10-07 Peter W. Graham , Roni Harnik , Surjeet Rajendran , Prashant Saraswat

We reanalyze the annual modulation data observed by CoGeNT experiment and show that if the annually modulated anomaly detected by CoGeNT is induced by collision between dark matter particle and nucleus, it can be fitted by a $Z'$ model with…

High Energy Physics - Phenomenology · Physics 2011-08-22 Haipeng An , Fei Gao

It has been suggested that dark matter particles which scatter inelastically from detector target nuclei could explain the apparent incompatibility of the DAMA modulation signal (interpreted as evidence for particle dark matter) with the…

The magnetic inelastic dark matter (MiDM) model, in which dark matter inelastically scatters off nuclei through a magnetic dipole interaction, has previously been shown to reconcile the DAMA/LIBRA annual modulation signal with null results…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 Tongyan Lin , Douglas P. Finkbeiner

The CoGeNT collaboration has recently made available new data collected over a period of 15 months. In addition to more accurately measuring the spectrum of nuclear recoil candidate events they have announced evidence for an annual…

High Energy Physics - Phenomenology · Physics 2011-08-25 R. Foot

Light WIMP dark matter and hidden sector dark matter have been proposed to explain the DAMA, CoGeNT and CRESST-II data. Both of these approaches feature spin independent elastic scattering of dark matter particles on nuclei. Light WIMP dark…

High Energy Physics - Phenomenology · Physics 2012-11-15 R. Foot

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…

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