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Despite strong evidence for the existence of large amounts of dark matter (DM) in our Universe, there is no direct indication of its presence in our own solar system. All estimates of the local DM density rely on extrapolating results on…

High Energy Physics - Phenomenology · Physics 2021-12-23 Bradley J. Kavanagh , Timon Emken , Riccardo Catena

Dark matter detectors built primarily to probe elastic scattering of WIMPs on nuclei are also precise probes of light, weakly coupled particles that may be absorbed by the detector material. In this paper, we derive constraints on the…

High Energy Physics - Phenomenology · Physics 2015-07-23 Haipeng An , Maxim Pospelov , Josef Pradler , Adam Ritz

Sub-GeV dark matter candidates are of increasing interest, because long-favored candidates such as GeV-scale WIMPs have not been detected. For low-mass dark matter, model-independent constraints are weak or nonexistent. We show that for…

High Energy Physics - Phenomenology · Physics 2019-07-09 Christopher V. Cappiello , Kenny C. Y. Ng , John F. Beacom

The effect of some possible non standard WIMP velocity distributions, like the Debris Flows recently proposed, on the direct dark matter detection rates is investigated. We find that such distributions may be deciphered from the data,…

High Energy Physics - Phenomenology · Physics 2013-05-30 J. D. Vergados

Assuming for Weakly Interacting Massive Particles (WIMPs) a Maxwellian velocity distribution in the Galaxy we explore in a systematic way the relative sensitivity of an extensive set of existing and projected Dark Matter (DM) direct…

High Energy Physics - Phenomenology · Physics 2019-03-01 Sunghyun Kang , Stefano Scopel , Gaurav Tomar , Jong-Hyun Yoon

We study a model in which dark matter couples to the Standard Model through a dilaton of a sector with spontaneously broken approximate scale invariance. Scale invariance fixes the dilaton couplings to the Standard Model and dark matter…

High Energy Physics - Phenomenology · Physics 2014-10-31 Kfir Blum , Mathieu Cliche , Csaba Csaki , Seung J. Lee

TThe fundamental properties of the postulated dark matter (DM) affect the internal structure of gravitationally-bound structures. In the cold dark matter paradigm, DM particles interact only via gravity. Their distribution is well…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-05 D. Eckert , S. Ettori , A. Robertson , R. Massey , E. Pointecouteau , D. Harvey , I. G. McCarthy

Self-interacting dark matter offers an interesting alternative to collisionless dark matter because of its ability to preserve the large-scale success of the cold dark matter model, while seemingly solving its challenges on small scales. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Mark Vogelsberger , Jesus Zavala

We study the implications of galaxy formation on dark matter direct detection using high resolution hydrodynamic simulations of Milky Way-like galaxies simulated within the EAGLE and APOSTLE projects. We identify Milky Way analogues that…

Directional detection of WIMPs, in which the energies and directions of the recoiling nuclei are measured, currently presents the only prospect for probing the local velocity distribution of Galactic dark matter. We investigate the extent…

Cosmology and Nongalactic Astrophysics · Physics 2014-12-11 Ciaran A. J. O'Hare , Anne M. Green

We investigate the impact of uncertainty in the velocity distribution of dark matter on direct detection experiments. We construct an multinomial prior with a hyperparameter $\beta$ that describes the strength of our belief in an isotropic…

High Energy Physics - Phenomenology · Physics 2019-01-08 Andrew Fowlie

We present a new technique to constrain the gravitational potential of a galaxy from the observed stellar mass surface density alone under a number of assumptions. It uses the classical Eddington Inversion Method to compute the phase-space…

Astrophysics of Galaxies · Physics 2025-02-19 Jorge Sanchez Almeida , Ignacio Trujillo , Mireia Montes , Angel R. Plastino

We extend the calculation of dark matter direct detection rates via electronic transitions in general dielectric crystal targets, combining state-of-the-art density functional theory calculations of electronic band structures and wave…

High Energy Physics - Phenomenology · Physics 2021-12-01 Sinéad M. Griffin , Katherine Inzani , Tanner Trickle , Zhengkang Zhang , Kathryn M. Zurek

Making robust predictions for the phase space distribution of dark matter at the solar neighbourhood is vital for dark matter direct detection experiments. To date, almost all such predictions have been based on simulations that model the…

Astrophysics of Galaxies · Physics 2015-05-13 J. I. Read , L. Mayer , A. M. Brooks , F. Governato , G. Lake

We present a new method for determining the local dark matter density using kinematic data for a population of tracer stars. The Jeans equation in the $z$-direction is integrated to yield an equation that gives the velocity dispersion as a…

Astrophysics of Galaxies · Physics 2016-05-10 Hamish Silverwood , Sofia Sivertsson , Pascal Steger , Justin I. Read , Gianfranco Bertone

An annual modulation in the event rate of the NaI detector of the DAMA collaboration has been used to infer the existence of particle dark matter in the Galactic halo. Bounds on the WIMP mass and WIMP-nucleon cross section have been…

High Energy Physics - Phenomenology · Physics 2010-02-03 Piero Ullio , Marc Kamionkowski

We investigate the dark matter profile of the Milky Way using the observed rotation curve data out to 100 kpc. The baryonic matter of the Milky Way is divided into bulge, disk and gas components, and each component is modelled using various…

Astrophysics of Galaxies · Physics 2019-08-19 Hai-Nan Lin , Xin Li

We reconsider the discovery limit of multi-ton direct detection dark matter experiments in the light of recent measurements of the coherent elastic neutrino-nucleus scattering process. Assuming the cross section to be a parameter entirely…

High Energy Physics - Phenomenology · Physics 2022-01-28 D. Aristizabal Sierra , V. De Romeri , L. J. Flores , D. K. Papoulias

The search for weakly interacting massive particles (WIMPs) by direct detection faces an encroaching background due to coherent neutrino-nucleus scattering. For a given WIMP mass the cross section at which neutrinos constitute a dominant…

Cosmology and Nongalactic Astrophysics · Physics 2016-09-28 Ciaran A. J. O'Hare

We use the state-of-the-art high-resolution cosmological simulations by IllustrisTNG to derive the velocity distribution and local density of dark matter in galaxies like our Milky Way and find a substantial spread in both quantities. Next…

High Energy Physics - Phenomenology · Physics 2020-08-26 Andrzej Hryczuk , Ekaterina Karukes , Leszek Roszkowski , Matthew Talia