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In this work we show how the inclusion of dark matter (DM) direct detection upper bounds in a theoretically consistent manner can affect the allowed parameter space of a DM model. Traditionally, the limits from DM direct detection…

High Energy Physics - Phenomenology · Physics 2016-03-14 Cristina Marcos , Miguel Peiro , Sandra Robles

We examine the cosmology of warm dark matter (WDM), both stable and decaying, from the point of view of structure formation. We compare the matter power spectrum associated to WDM masses of 1.5 keV and 0.158 keV, with that expected for the…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-18 Jui-Lin Kuo , Massimiliano Lattanzi , Kingman Cheung , José W. F. Valle

Direct detection experiments aimed at uncovering the elusive nature of dark matter (DM) have made significant progress in probing ever lower cross-sections for DM-nucleon interactions. At the same time, an upper limit in the cross-section…

We propose a novel and feasible method to detect dark matter (DM) electron interaction via pulsating white dwarfs (WDs) in the central region of globular clusters. Annihilation of the DM particles captured by those WDs can provide…

High Energy Astrophysical Phenomena · Physics 2017-03-30 Jia-Shu Niu , Weikai Zong , Hui-Fang Xue

[Abridged] Indirect detection of dark matter (DM) by multi-wavelength astronomical observations provides a promising avenue for probing the particle nature of DM. In the case of DM consisting of Weakly-Interacting Massive Particles (WIMPs),…

High Energy Astrophysical Phenomena · Physics 2018-06-06 Alex McDaniel , Tesla Jeltema , Stefano Profumo

Results from the Wilkinson Microwave Anisotropy Probe (WMAP), Atacama Cosmology Telescope (ACT) and recently from the South Pole Telescope (SPT) have indicated the possible existence of an extra radiation component in addition to the well…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Ole Eggers Bjaelde , Subinoy Das , Adam Moss

Traditional dark matter models, eg. WIMPs, assume dark matter is weakly coupled to the standard model so that elastic scattering between dark matter and baryons can be described perturbatively by Born approximation. Most direct detection…

High Energy Physics - Phenomenology · Physics 2021-12-03 Xingchen Xu , Glennys R. Farrar

In this article, I summarize and discuss the body of evidence which has accumulated in favor of dark matter in the form of approximately 10 GeV particles. This evidence includes the spectrum and angular distribution of gamma rays from the…

Cosmology and Nongalactic Astrophysics · Physics 2012-01-09 Dan Hooper

About $26\%$ of the matter in our Universe is made up of Dark Matter (DM), which interacts with Standard Model (SM) matter only through gravitational or weak interactions. Many proposals have been made by scientists about the possible…

High Energy Physics - Experiment · Physics 2022-03-30 Kalpana Bora

It has been suggested that cold dark matter (CDM) has difficulties in explaining tentative evidence for noncuspy halo profiles in small galaxies, and the low velocity dispersions observed in the largest Milky Way satellites ("too big to…

High Energy Physics - Phenomenology · Physics 2021-07-27 James M. Cline , Zuowei Liu , Guy D. Moore , Wei Xue

Warm dark matter (WDM) has been proposed as an alternative to cold dark matter (CDM), to resolve issues such as the apparent lack of satellites around the Milky Way. Even if WDM is not the answer to observational issues, it is essential to…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Lin F. Yang , Mark C. Neyrinck , Miguel A. Aragon-Calvo , Bridget Falck , Joseph Silk

We present updated constraints on 'light' Dark Matter (DM) particles with masses between 1 MeV and 5 GeV. In this range, we can expect DM-produced $e^\pm$ pairs to up-scatter low-energy ambient photons in the Milky Way via the Inverse…

High Energy Physics - Phenomenology · Physics 2024-01-17 Jordan Koechler

Fuzzy Dark Matter (FDM) is one of the recent models for dark matter. According to this model, dark matter is made of very light scalar particles with considerable quantum mechanical effects on the galactic scale, which solves many problems…

Astrophysics of Galaxies · Physics 2020-05-13 Alireza Maleki , Shant Baghram , Sohrab Rahvar

Here we discuss what are perhaps the two most popular variants of CDM that might agree with the data: \lcdm\ and CHDM. While the predictions of COBE-normalized \lcdm\ and CHDM both agree well with the available data on scales of $\sim 10$…

Astrophysics · Physics 2009-10-28 Joel Primack , Anatoly Klypin

Self-interacting dark matter (SIDM) naturally gives rise to a cored isothermal density profile, which is favored in observations of many dwarf galaxies. The dark matter distribution in the presence of a central black hole in an isothermal…

High Energy Physics - Phenomenology · Physics 2022-01-19 Gerardo Alvarez , Hai-Bo Yu

Direct detection of Sub-GeV dark matter (DM) is challenging because the recoil energy of the nuclei or electron from the elastic scattering of a sub-GeV DM off the target can hardly reach the detector threshold. In this paper, we present a…

High Energy Physics - Phenomenology · Physics 2021-10-01 Wei Chao , Mingjie Jin , Ying-Quan Peng

A new concept of generation of the cosmological baryon excess along with the cold dark matter (CDM) in the Universe is proposed and corresponding scenarios are outlined. Possible realizations of the idea in the framework of supersymmetric…

High Energy Physics - Phenomenology · Physics 2014-11-17 Vadim A. Kuzmin

Dark matter candidates comprising several sub-states separated by a small mass gap, and coupled to the Standard Model by (sub-)GeV force carriers, can exhibit non-trivial scattering interactions in direct detection experiments. We analyze…

High Energy Physics - Phenomenology · Physics 2009-07-09 Brian Batell , Maxim Pospelov , Adam Ritz

Massive vector particles are minimal dark matter candidates that motivate a wide range of laboratory searches, primarily exploiting a postulated kinetic mixing with the photon. However, depending on the high energy field content, the…

High Energy Physics - Phenomenology · Physics 2023-08-16 Gordan Krnjaic , Tanner Trickle

In light of the excess in the low-energy electron recoil events reported by XENON1T, many new physics scenarios have been proposed as a possible origin of the excess. One possible explanation is that the excess is a result of a fast moving…

High Energy Physics - Phenomenology · Physics 2020-12-30 R. Primulando , J. Julio , P. Uttayarat