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The Migdal effect is a key inelastic signal channel which could be used to detect low-mass dark matter, but it has never been observed experimentally using Standard Model probes. Here we propose a conceptual design for an experiment which…

High Energy Physics - Experiment · Physics 2024-12-16 Yonatan Kahn , Jesús Pérez-Ríos

Constraining the distribution of small-scale structure in our universe allows us to probe alternatives to the cold dark matter paradigm. Strong gravitational lensing offers a unique window into small dark matter halos ($<10^{10} M_\odot$)…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-08 Sebastian Wagner-Carena , Jelle Aalbers , Simon Birrer , Ethan O. Nadler , Elise Darragh-Ford , Philip J. Marshall , Risa H. Wechsler

Cosmology is living through fascinating times, where new observations from ground and space telescopes are questioning the established paradigm, the so-called Lambda Cold Dark Matter model. The particle nature of Dark Matter is severely…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-15 Juan Garcia-Bellido

Recent high-quality observations of dwarf and low surface brightness (LSB) galaxies have shown that their dark matter (DM) halos prefer flat central density profiles. On the other hand the standard cold dark matter model simulations predict…

Astrophysics of Galaxies · Physics 2021-02-17 T. Matos , Victor H. Robles

The discovery of Massive Astrophysical Compact Halo Objects (MACHOs) in microlensing experiments makes it compelling to understand their physical nature, as well as their formation mechanism. Within the present uncertainties, brown dwarfs…

Astrophysics · Physics 2011-05-12 F. De Paolis , G. Ingrosso , Ph. Jetzer , M. Roncadelli

The idea that dark-matter interactions with Standard-Model particles may be mediated by new bosons with masses in the MeV-to-GeV range took off several years ago. Constraints on such models were soon calculated based on older measurements.…

High Energy Physics - Experiment · Physics 2014-09-25 Abner Soffer

We reinterpret the results of the direct searches for dark matter in terms of composite dark matter, i.e. dark matter particles that form neutral bound states, generically called dark atoms, either with ordinary particles, or with other…

High Energy Physics - Phenomenology · Physics 2016-01-20 Quentin Wallemacq

The matter bounce scenario allows for a sizable parameter space where cosmological fluctuations originally exited the Hubble radius when the background energy density was small. In this scenario and its extended versions, the low energy…

Cosmology and Nongalactic Astrophysics · Physics 2016-03-02 Yi-Fu Cai , Francis Duplessis , Damien A. Easson , Dong-Gang Wang

Dark Matter (DM) is an elusive form of matter which has been postulated to explain astronomical observations through its gravitational effects on stars and galaxies, gravitational lensing of light around these, and through its imprint on…

High Energy Physics - Phenomenology · Physics 2016-06-07 James Bateman , Ian McHardy , Alexander Merle , Tim R. Morris , Hendrik Ulbricht

If the dark matter (DM) consists of a weakly interacting massive particle (WIMP), it can be produced and studied at future collider experiments like those at the LHC. The production of collider-stable WIMPs is characterized by hard…

High Energy Physics - Phenomenology · Physics 2009-07-15 Spencer Chang , Andre de Gouvea

In many cosmologies dark matter clusters on sub-kiloparsec scales and forms compact subhalos, in which the majority of Galactic dark matter could reside. Null results in direct detection experiments since their advent four decades ago could…

High Energy Physics - Phenomenology · Physics 2022-06-22 Joseph Bramante , Bradley J. Kavanagh , Nirmal Raj

The current standard model of cosmology, $\Lambda$CDM, requires dark matter to make up around $25\%$ of the total energy budget of the Universe. Yet, quite puzzlingly, there appears to be no candidate particle in the current Standard Model…

Cosmology and Nongalactic Astrophysics · Physics 2015-07-06 David M. Jacobs , Glenn D. Starkman , Amanda Weltman

All of the significant evidence for dark matter observed thus far has been through its gravitational interactions. After 40 years of direct detection experiments, the parameter space for Weakly Interacting Massive Particles (WIMPs) as dark…

High Energy Physics - Phenomenology · Physics 2024-11-04 Richard Casey , Cosmin Ilie

This review briefly describes light dark matter searches performed by the BABAR experiment. Although dark matter candidates have traditionally been associated with heavy particles appearing in extensions of the Standard Model, a lighter…

High Energy Physics - Experiment · Physics 2012-06-04 B. Echenard

Dark matter is poorly constrained by direct detection experiments at masses below 1 MeV. This is an important target for the next generation of experiments, and several methods have been proposed to probe this mass range. One class of such…

High Energy Physics - Phenomenology · Physics 2020-07-31 Benjamin V. Lehmann , Stefano Profumo

The nature of the dark matter in the halo of our Galaxy is still largely unknown. The microlensing events found so far towards the Large Magellanic Cloud suggest that at most about 20% of the halo dark matter is in the form of MACHOs…

High Energy Physics - Phenomenology · Physics 2017-08-23 Philippe Jetzer

These lectures are intended to provide a brief pedagogical review of dark matter for the newcomer to the subject. We begin with a discussion of the astrophysical evidence for dark matter. The standard weakly-interacting massive particle…

Cosmology and Nongalactic Astrophysics · Physics 2009-07-14 Guido D'Amico , Marc Kamionkowski , Kris Sigurdson

High energy neutrinos are produced by the annihilation of dark matter particles in our galaxy. These are presently searched for with large area, deep underground neutrino telescopes. Cold dark matter particles, trapped inside the sun, are…

High Energy Physics - Phenomenology · Physics 2009-09-25 F. Halzen , J. E. Jacobsen

Ultracompact dark matter minihalos (UCMHs) would be formed during the earlier universe if there were large density perturbations. If the dark matter can decay into the standard model particles, such as neutrinos, these objects would become…

Cosmology and Nongalactic Astrophysics · Physics 2015-01-06 Yun-Long Zheng , Yu-Peng Yang , Ming-Zhe Li , Hong-Shi Zong

The evidence for the existence of dark matter in the universe is reviewed. A general picture emerges, where both baryonic and non-baryonic dark matter is needed to explain current observations. In particular, a wealth of observational…

High Energy Physics - Phenomenology · Physics 2009-07-09 L. Bergstrom
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