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Multi-component dark matter particles may have a more intricate direct detection signal than simple elastic scattering on nuclei. In a broad class of well-motivated models the inelastic excitation of dark matter particles is followed by…

High Energy Physics - Phenomenology · Physics 2014-03-19 Maxim Pospelov , Neal Weiner , Itay Yavin

We study the dark matter (DM) direct detection for the models with the effects of the isospin-violating couplings, exothermic scatterings, and/or the lightness of the mediator, proposed to relax the tension between the CDMS-Si signals and…

High Energy Physics - Phenomenology · Physics 2016-08-08 Chao-Qiang Geng , Da Huang , Chun-Hao Lee , Qing Wang

We study the prospects of characterising Dark Matter at colliders using Machine Learning (ML) techniques. We focus on the monojet and missing transverse energy (MET) channel and propose a set of benchmark models for the study: a typical…

High Energy Physics - Phenomenology · Physics 2021-06-23 C. K. Khosa , V. Sanz , M. Soughton

The main virtue of the Inert Doublet Model (IDM) is that one of its spinless neutral bosons can play the role of Dark Matter. Assuming that the additional sources of CP violation are present in the form of higher dimensional operator(s) we…

High Energy Physics - Phenomenology · Physics 2015-06-05 Grzegorz Gil , Piotr Chankowski , Maria Krawczyk

The DAMIC (Dark Matter in CCDs) experiment searches for the interactions of dark matter particles with the nuclei and the electrons in the silicon bulk of thick fully depleted charge-coupled devices (CCDs). Because of the low noise and low…

High Energy Physics - Experiment · Physics 2020-04-02 Mariangela Settimo

We employ the Planck 2013 CMB temperature anisotropy and lensing data, and baryon acoustic oscillation (BAO) data to constrain a phenomenological $w$CDM model, where dark matter and dark energy interact. We assume time-dependent equation of…

Cosmology and Nongalactic Astrophysics · Physics 2015-07-15 Jussi Valiviita , Elina Palmgren

A suitable nonlinear interaction between dark matter with an energy density $\rho_{M}$ and dark energy with an energy density $\rho_{X}$ is known to give rise to a non-canonical scaling $\rho_{M} \propto \rho_{X}a^{-\xi}$ where $\xi$ is a…

Cosmology and Nongalactic Astrophysics · Physics 2016-07-08 A. Romero Fuño , W. S. Hipólito-Ricaldi , W. Zimdahl

We perform a detailed analysis of a theoretically motivated dark energy quintessence model which interacts with the dark matter sector of the universe. Utilising the current observational datasets from the Cosmic Microwave Background,…

General Relativity and Quantum Cosmology · Physics 2025-09-12 Atul Ashutosh Samanta , Abhijith Ajith , Sukanta Panda

Data collected during three years with a germanium spectrometer at the Sierra Grande underground laboratory have been analyzed for distinctive features of annual modulation of the signal induced by WIMP dark matter candidates. The main…

We perform a set of cosmological simulations of structure formation in a mixed dark matter (MDM) model. Our model is motivated by the recently identified $3.5\,{\rm keV}$ X-ray line, which can be explained by the decay of non-resonantly…

Cosmology and Nongalactic Astrophysics · Physics 2016-01-21 Akira Harada , Ayuki Kamada

We revisit the WIMP-type dark matter scattering on electrons that results in atomic ionization, and can manifest itself in a variety of existing direct-detection experiments. Unlike the WIMP-nucleon scattering, where current experiments…

High Energy Physics - Phenomenology · Physics 2016-07-01 B. M. Roberts , V. A. Dzuba , V. V. Flambaum , M. Pospelov , Y. V. Stadnik

We consider the prospects for multiple dark matter direct detection experiments to determine if the interactions of a dark matter candidate are isospin-violating. We focus on theoretically well-motivated examples of isospin-violating dark…

High Energy Physics - Phenomenology · Physics 2018-03-09 Chris Kelso , Jason Kumar , Danny Marfatia , Pearl Sandick

Mirror dark matter offers a framework to explain the existing dark matter direct detection experiments. Here we confront this theory with the most recent experimental data, paying attention to the various known systematic uncertainties, in…

High Energy Physics - Phenomenology · Physics 2010-11-11 R. Foot

We explain both the observation of dark matter by the seasonal variation of the DAMA-LIBRA data and the observation of ``electron recoil'' events at Xenon1T by the SAME dark matter model. This DM is bubbles of a new type of vacuum…

High Energy Physics - Phenomenology · Physics 2021-11-23 C. D. Froggatt , H. B. Nielsen

We explore the potential of upcoming 21-cm interferometric observations to probe interacting dark matter (IDM). We focus on scenarios where the dark matter-baryon scattering cross-section scales as $\sigma(v) =\sigma_{0} v^n$, with…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-29 Aryan Rahimieh , Priyank Parashari , Vera Gluscevic

MONDian dark matter (MDM) is a new form of dark matter quantum that naturally accounts for Milgrom's scaling, usually associated with modified Newtonian dynamics (MOND), and theoretically behaves like cold dark matter (CDM) at cluster and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Doug Edmonds , Duncan Farrah , Chiu Man Ho , Djordje Minic , Y. Jack Ng , Tatsu Takeuchi

We try to interpret a very light dark matter with mass of 5~10 GeV which is in favor of the recent experiments reported by CoGeNT and DAMA, in a non-supersymmetric extension of radiative seesaw model with a family symmetry D_6 x Z_2 x Z_2.…

High Energy Physics - Phenomenology · Physics 2011-09-14 Yuji Kajiyama , Hiroshi Okada , Takashi Toma

Dark Matter (DM) is generally assumed to be massive, cold and collisionless from the structure formation point of view. A more correct statement however is that DM indeed experiences collisional damping, but on a scale which is supposed to…

Astrophysics · Physics 2007-05-23 C. Boehm , H. Mathis , J. Devriendt , J. Silk

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