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Astrophysical observations and cosmological data have led to the conclusion that nearly one quarter of the Universe consists of dark matter. Under certain assumptions, an observable signature of dark matter is the annual modulation of the…

High Energy Astrophysical Phenomena · Physics 2012-12-19 J. Cherwinka , R. Co , D. F. Cowen , D. Grant , F. Halzen , K. M. Heeger , L. Hsu , A. Karle , V. A. Kudryavtsev , R. Maruyama , W. Pettus , M. Robinson , N. J. C. Spooner

The DAMA collaboration reported an annually modulated rate with a phase compatible with a Dark Matter induced signal. We point out that a slowly varying rate can bias or even simulate an annual modulation if data are analyzed in terms of…

High Energy Physics - Experiment · Physics 2020-05-20 Dario Buttazzo , Paolo Panci , Nicola Rossi , Alessandro Strumia

The long-standing model-independent annual modulation effect measured by DAMA Collaboration is examined in the context of asymmetric mirror dark matter, assuming that dark atoms interact with target nuclei in the detector via kinetic mixing…

High Energy Physics - Experiment · Physics 2015-09-03 A. Addazi , Z. Berezhiani , R. Bernabei , P. Belli , F. Cappella , R. Cerulli , A. Incicchitti

The annual modulation measured by the DAMA/LIBRA experiment can be explained by the interaction of dark matter WIMPs in NaI(Tl) scintillator detectors. Other experiments, with different targets or techniques, exclude the region of…

Instrumentation and Methods for Astrophysics · Physics 2017-04-25 I. Coarasa , J. Amaré , S. Cebrián , C. Cuesta , E. García , M. Martínez , M. A. Oliván , Y. Ortigoza , A. Ortiz de Solórzano , J. Puimedón , M. L. Sarsa , J. A. Villar , P. Villar

We re-analyse the implications of the DAMA/NaI experiment for mirror matter-type dark matter, taking into account information from the energy dependence of the DAMA annual modulation signal. This is combined with the null results from the…

Astrophysics · Physics 2008-11-26 R. Foot

The DAMA/LIBRA collaboration has detected an annual modulation of the recoil rate in NaI crystals with the phase expected for WIMP scattering events. This signal is dramatically inconsistent with upper limits from other experiments for…

Cosmology and Nongalactic Astrophysics · Physics 2010-09-14 Douglas P. Finkbeiner , Tongyan Lin , Neal Weiner

Peaking consistently in June for nearly eleven years, the annual modulation signal reported by DAMA/NaI and DAMA/LIBRA offers strong evidence for the identity of dark matter. DAMA's signal strongly suggest that dark matter inelastically…

High Energy Physics - Phenomenology · Physics 2015-03-13 Daniele S. M. Alves , Siavosh R. Behbahani , Philip Schuster , Jay G. Wacker

We investigate the possibility for the direct detection of low mass (GeV scale) WIMP dark matter in scintillation experiments. Such WIMPs are typically too light to leave appreciable nuclear recoils, but may be detected via their scattering…

High Energy Physics - Phenomenology · Physics 2019-10-09 B. M. Roberts , V. V. Flambaum

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…

For nearly two decades the DAMA Collaboration has been observing a modulating signal compatible with that expected from a dark matter presence in our galaxy. However, interpretations of this with the standard assumptions for dark matter…

High Energy Physics - Experiment · Physics 2022-12-01 Madeleine J. Zurowski

The channeling of the ion recoiling after a collision with a WIMP in direct dark matter crystalline detectors produces a larger scintillation or ionization signal than otherwise expected. Channeling is a directional effect which depends on…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 Nassim Bozorgnia , Graciela B. Gelmini , Paolo Gondolo

The DAMA experiment clearly observes a small oscillatory signal. The observed yearly modulation is in phase with the Earth's motion around the Sun. Recent reference [Vavra, 2014] suggested that the DAMA experiment observes a WIMP of much…

Instrumentation and Methods for Astrophysics · Physics 2014-01-28 J. Va'vra

Recently, the DAMA/LIBRA collaboration released updated results from their search for the annual modulation signal from Dark Matter (DM) scattering in the detector. Besides approximately doubling the exposure of the DAMA/LIBRA data set, the…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-03 Sebastian Baum , Katherine Freese , Chris Kelso

Mirror atoms are expected to be a significant component of the galactic dark matter halo if mirror matter is identified with the non-baryonic dark matter in the Universe. Mirror matter can interact with ordinary matter via gravity and via…

High Energy Physics - Phenomenology · Physics 2008-11-26 R. Foot

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

In a recent paper [arXiv:2002.00459], Buttazzo et al. show how the annually modulated rate of the DAMA experiments can be possibly interpreted as an artefact due to the interplay between a time-dependent background and the method to account…

High Energy Physics - Experiment · Physics 2020-04-29 Andrea Messina , Marco Nardecchia , Stefano Piacentini

The annual modulation measured by the DAMA/LIBRA experiment can be explained by the interaction of dark matter WIMPs in NaI(Tl) scintillator detectors. Other experiments, with different targets or techniques, exclude the region of…

Instrumentation and Methods for Astrophysics · Physics 2019-03-14 I. Coarasa , J. Amaré , S. Cebrián , C. Cuesta , E. García , M. Martínez , M. A. Oliván , Y. Ortigoza , A. Ortiz de Solórzano , J. Puimedón , A. Salinas , M. L. Sarsa , P. Villar , J. A. Villar

The DAMA/LIBRA collaboration has reported the observation of an annual modulation in the event rate that has been attributed to dark matter interactions over the last two decades. However, even though tremendous efforts to detect similar…

A mirror sector of particles and forces provides a simple explanation of the inferred dark matter of the Universe. The status of this theory is reviewed - with emphasis on how the theory explains the impressive DAMA/NaI annual modulation…

High Energy Physics - Phenomenology · Physics 2008-11-26 R. Foot

Experimental observations and theoretical arguments point out that Dark Matter (DM) particles are one of the most prominent component of the Universe. This motivated the pioneer DAMA experiment to investigate the presence of these particles…

High Energy Physics - Phenomenology · Physics 2021-10-12 R. Bernabei , P. Belli , V. Caracciolo , R. Cerulli , V. Merlo , F. Cappella , A. d'Angelo , A. Incicchitti , C. J. Dai , X. H. Ma , X. D. Sheng , F. Montecchia , Z. P. Ye