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The known direction of motion of dark matter particles relative to the Earth may be a key for their unambiguous identification even in the presence of backgrounds. We describe a prototype detector that is able to reconstruct direction…

Indirect searches for Dark Matter (DM) particles with mass in the MeV -- GeV scale have received significant attention lately. Pair-annihilations of such DM particles in the Galaxy can give rise to (at the same time) MeV to GeV…

高能物理 - 唯象学 · 物理学 2026-01-30 Marco Cirelli , Arpan Kar , Halim Shaikh

Several independent observations of the Galactic core suggest hitherto unexplained sources of energy. We suggest that dark matter in the form of dense antimatter nuggets could provide a natural site for electron and proton annihilation,…

天体物理学 · 物理学 2014-10-13 Michael McNeil Forbes , Ariel R. Zhitnitsky

If dark matter (DM) carries anti-baryon number, a DM particle may annihilate with a nucleon by flipping to anti-DM. Inspired by Hylogenesis models, we introduce a single component DM model where DM is asymmetric and carries B and L as -1/2.…

高能物理 - 唯象学 · 物理学 2014-02-26 Junwu Huang , Yue Zhao

One of the key predictions of the WIMP paradigm for Dark Matter (DM) is that DM particles can annihilate into charged particles. These annihilations will proceed in e.g. Galactic subhalos such as dwarf Galaxies or, as recently pointed out,…

星系天体物理 · 物理学 2016-11-14 Natacha Leite , Robin Reuben , Guenter Sigl , Michel H. G. Tytgat , Martin Vollmann

The detection of light dark matter (DM) is a longstanding challenge in terrestrial experiments. High-intensity facility of an intense electromagnetic field may provide a plausible strategy to study strong-field particle physics and search…

高能物理 - 唯象学 · 物理学 2025-09-03 Kai Ma , Tong Li

As experimental constraints on DM interactions become ever more sensitive and push into new regimes of DM mass, it becomes more and more challenging to accurately model the process by which Dark Matter particles lose energy through…

高能物理 - 唯象学 · 物理学 2017-12-05 M. Shafi Mahdawi , Glennys R. Farrar

The possibility of explaining the positron and electron excess recently found by the PAMELA and ATIC collaborations in terms of dark matter (DM) annihilation has attracted considerable attention. Models surviving bounds from, e.g,…

天体物理学 · 物理学 2010-04-15 Lars Bergstrom , Gianfranco Bertone , Torsten Bringmann , Joakim Edsjo , Marco Taoso

Reducing theoretical uncertainties in Galactic dark matter (DM) searches is an important challenge as several experiments are now delving into the parameter space relevant to popular (particle or not) candidates. Since many DM signal…

星系天体物理 · 物理学 2020-10-20 Thomas Lacroix , Arturo Núñez-Castiñeyra , Martin Stref , Julien Lavalle , Emmanuel Nezri

The cosmic-ray excess observed by PAMELA in the positron fraction and by FERMI and HESS in the electron + positron flux can be interpreted in terms of DM annihilations or decays into leptonic final states. Final states into tau's or 4mu…

高能物理 - 唯象学 · 物理学 2010-02-24 Patrick Meade , Michele Papucci , Alessandro Strumia , Tomer Volansky

We study sub-GeV dark matter (DM) particles that may annihilate or decay into SM particles producing an exotic injection component in the Milky Way that leaves an imprint in both photon and cosmic ray (CR) fluxes. Specifically, the DM…

高能物理 - 唯象学 · 物理学 2024-04-25 Pedro De la Torre Luque , Shyam Balaji , Jordan Koechler

We propose to test the dark matter (DM) interpretation of the positron excess observed by the PAMELA cosmic-ray (CR) detector through the identification of a Galactic diffuse gamma-ray component associated to DM-induced prompt and radiative…

星系天体物理 · 物理学 2009-09-01 Marco Regis , Piero Ullio

The latest years have seen steady progresses in WIMP dark matter (DM) searches, with hints of possible signals suggested by both direct and indirect detection experiments. Antiprotons can play a key role validating those interpretations…

高能天体物理现象 · 物理学 2012-06-29 Carmelo Evoli , Ilias Cholis , Dario Grasso , Luca Maccione , Piero Ullio

Asymmetric Dark Matter (ADM) models invoke a particle-antiparticle asymmetry, similar to the one observed in the Baryon sector, to account for the Dark Matter (DM) abundance. Both asymmetries are usually generated by the same mechanism and…

高能物理 - 唯象学 · 物理学 2015-06-04 Mattias Blennow , Enrique Fernandez-Martinez , Olga Mena , Javier Redondo , Paolo Serra

In this work, we consider the process $e^{+}+e^{-}\rightarrow b\bar{b}+\slashed{E}_{T}$, at the future electron-positron colliders such as the International Linear Collider and Compact Linear Collider, to look for the dark matter (DM)…

高能物理 - 唯象学 · 物理学 2017-09-25 Nabil Baouche , Amine Ahriche

Sub-GeV dark matter particles can annihilate or decay producing e^\pm pairs which upscatter the low-energy photon fields in the Galaxy and generate an X-ray emission (via the Inverse Compton effect). Using X-ray data from XMM-Newton,…

高能物理 - 唯象学 · 物理学 2025-07-18 Marco Cirelli , Nicolao Fornengo , Jordan Koechler , Elena Pinetti , Brandon M. Roach

In the framework of the Inert Doublet Model, a very simple extension of the Standard Model, we study the production and propagation of antimatter in cosmic rays coming from annihilation of a scalar dark matter particle. We consider three…

高能物理 - 唯象学 · 物理学 2009-05-06 Emmanuel Nezri , Michel H. G. Tytgat , Gilles Vertongen

Recent measurements of cosmic ray leptons by PAMELA, ATIC, HESS and Fermi revealed interesting excesses. Many authors suggested particle Dark Matter (DM) annihilations could be at the origin of these effects. In this paper, we critically…

宇宙学与河外天体物理 · 物理学 2014-11-20 Pierre Brun

The cosmic electron and positron excesses have been explained as possible dark matter (DM) annihilation products. In this work we investigate the possible effects of such a DM annihilation scenario during the evolution history of the…

宇宙学与河外天体物理 · 物理学 2014-11-20 Qiang Yuan , Bin Yue , Xiaojun Bi , Xuelei Chen , Xinmin Zhang

We recap the main features of Minimal Dark Matter (MDM) and assess its status in the light of the recent experimental data. The theory selects an electroweak 5-plet with hypercharge Y=0 as a fully successful DM candidate, automatically…

高能物理 - 唯象学 · 物理学 2014-11-18 Marco Cirelli , Alessandro Strumia