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We investigate the sensitivity of a large, underground LArTPC-based neutrino detector to dark matter in the Galactic Center annihilating into neutrinos. Such a detector could have the ability to resolve the direction of the electron in a…

高能物理 - 实验 · 物理学 2023-05-24 Matthew R. Buckley , Andrew Mastbaum , Gopolang Mohlabeng

The velocity distribution function (VDF) of the hypothetical Weakly Interacting Massive Particles (WIMPs), currently the most favored candidate for the Dark Matter (DM) in the Galaxy, is determined directly from the circular speed…

星系天体物理 · 物理学 2013-05-01 Pijushpani Bhattacharjee , Soumini Chaudhury , Susmita Kundu , Subhabrata Majumdar

The particle origin of dark matter (DM) is still one of the main puzzles in modern physics. One of the most promising search strategy to detect DM at laboratories is through the indirect search of cosmic particles that are produced from DM…

高能天体物理现象 · 物理学 2023-05-04 Haoxiang Zhan

The Dark Matter Particle Explorer (DAMPE) is a space-borne particle detector and cosmic ray observatory in operation since 2015, designed to probe electrons and gamma rays from a few GeV to 10 TeV energy, as well as cosmic protons and…

We reconsider the proposal of excited dark matter (DM) as an explanation for excess 511 keV gamma rays from positrons in the galactic center. We quantitatively compute the cross section for DM annihilation to nearby excited states, mediated…

高能物理 - 唯象学 · 物理学 2014-11-20 Fang Chen , James M. Cline , Anthony Fradette , Andrew R. Frey , Charles Rabideau

Dark matter (DM) particles with mass in the sub-GeV range are an attractive alternative to heavier weakly-interacting massive particles, but direct detection of such light particles is challenging. If however DM-nucleus scattering leads to…

高能物理 - 唯象学 · 物理学 2018-09-12 Matthew J. Dolan , Felix Kahlhoefer , Christopher McCabe

We perform a detailed analysis of the synchrotron signals produced by Dark Matter annihilations and decays. We consider different set-ups for the propagation of electrons and positrons, the galactic magnetic field and Dark Matter…

高能物理 - 唯象学 · 物理学 2025-07-29 Marco Cirelli , Marco Taoso

Using the high-resolution spectrometer SPI on board the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), we search for a spectral line produced by a dark matter(DM) particle with a mass in the range 40keV < M_DM < 14MeV, decaying…

天体物理学 · 物理学 2009-11-13 Alexey Boyarsky , Denys Malyshev , Andrey Neronov , Oleg Ruchayskiy

The presence of dark matter (DM) is suggested by a wealth of astrophysical and cosmological measurements. However, its underlying nature is yet unknown. Among the most promising candidates are weakly interacting massive particles (WIMPs):…

高能天体物理现象 · 物理学 2021-08-25 A. Montanari , E. Moulin , D. Malyshev

We revisit the signatures from collisions of cosmic-rays on sub-GeV dark matter (DM) in the Milky Way. In addition to the upscattered DM component that can be probed by existing DM and neutrino experiments widely discussed, we examine the…

高能天体物理现象 · 物理学 2020-11-09 Gang Guo , Yue-Lin Sming Tsai , Meng-Ru Wu , Qiang Yuan

The precise measurements of energy spectra of cosmic ray positrons and/or electrons by recent experiments show clear excesses above 10 GeV. Moreover, a potential sharp spectral feature was suggested by the Dark Matter Particle Explorer…

高能物理 - 唯象学 · 物理学 2020-04-29 Lei Feng , Zhaofeng Kang , Qiang Yuan , Peng-Fei Yin , Yi-Zhong Fan

A GeV gamma-ray excess has possibly been individuated in Fermi-LAT data from the Galactic Center and interpreted in terms of Dark Matter (DM) annihilations, either in hadronic (essentially $b\bar{b}$) or leptonic channels. In order to test…

高能物理 - 唯象学 · 物理学 2015-06-22 Marco Cirelli , Daniele Gaggero , Gaëlle Giesen , Marco Taoso , Alfredo Urbano

In this work we develop a new propagation model for the Galactic cosmic rays based on the GALPROP code, including contributions from dark matter annihilation. The model predicts compatible Galactic diffuse $\gamma$ ray spectra with EGRET…

天体物理学 · 物理学 2008-11-26 Xiao-Jun Bi , Juan Zhang , Qiang Yuan

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…

高能物理 - 唯象学 · 物理学 2021-12-23 Bradley J. Kavanagh , Timon Emken , Riccardo Catena

Direct detection of dark matter with directional sensitivity offers not only measurement of both recoil energy and direction of dark matter, but also a way to understand dark matter distribution in the Galaxy. Maxwell distribution is…

高能物理 - 唯象学 · 物理学 2015-06-18 Keiko I. Nagao

A number of signals involving charged cosmic rays and high-energy photons have been interpreted as being due to annihilating dark matter. This article provides an overview of the experimental evidence and discusses in particular detections…

天体物理学 · 物理学 2007-05-23 U. Schwanke

The center of the Milky Way is a prime site to search for signals of dark matter (DM) annihilation due to its proximity and expected high concentration of DM. The amplification of the dispersion velocity of DM particles in the Galactic…

高能天体物理现象 · 物理学 2023-10-25 Alessandro Montanari , Oscar Macias , Emmanuel Moulin

We overview the construction of Nonforward Parton Distributions (NPD) in Deeply Virtual Compton Scattering (DVCS). Then we turn to the analysis of similar constructs in the weak sector (electroweak NPD's). We argue in favour of a possible…

高能物理 - 唯象学 · 物理学 2007-05-23 Claudio Coriano` , G. Chirilli , Marco Guzzi

Clear methods to differentiate between decaying and annihilating dark matter (DM) scenarios are still by and large unavailable. In this note, we study the potential astrophysical signatures of a new class of hidden sector decaying DM…

高能物理 - 唯象学 · 物理学 2009-08-11 Joshua T. Ruderman , Tomer Volansky

Annihilation of Dark Matter (DM) particles has been recognized as one of the possible mechanisms for the production of non-thermal particles and radiation in galaxy clusters. Previous studies have shown that, while DM models can reproduce…

宇宙学与河外天体物理 · 物理学 2016-11-21 P. Marchegiani , S. Colafrancesco