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We derive limits on the dark matter annihilation cross section and lifetime using measurements of the AMS-02 antiproton ratio and positron fraction data. In deriving the limits, we consider the scenario of secondary particles accelerated in…

High Energy Astrophysical Phenomena · Physics 2016-05-25 Bo-Qiang Lu , Hong-Shi Zong

Weakly Interacting Massive Particles (WIMPs) have long reigned as one of the leading classes of dark matter candidates. The observed dark matter abundance can be naturally obtained by freezeout of weak-scale dark matter annihilations in the…

High Energy Physics - Phenomenology · Physics 2018-07-20 Rebecca K. Leane , Tracy R. Slatyer , John F. Beacom , Kenny C. Y. Ng

The data on cosmic antiprotons have reached an outstanding precision on energies spanning from GeV to hundreds of TeV, thanks to the space-based AMS-02 experiment. The balloon-borne GAPS experiment, which just completed its first Antarctic…

High Energy Physics - Phenomenology · Physics 2026-05-12 Lorenzo Stefanuto , Mattia Di Mauro , Fiorenza Donato , Nicolao Fornengo , Jordan Koechler , David Maurin

A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Kr\"amer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray propagation uncertainties by fitting at…

High Energy Astrophysical Phenomena · Physics 2017-11-07 Alessandro Cuoco , Jan Heisig , Michael Korsmeier , Michael Krämer

We use recently released data on the positron-to-electron ratio in cosmic rays from the AMS-02 experiment to constrain dark matter annihilation in the Milky Way. Due to the yet unexplained positron excess, limits are generally weaker than…

High Energy Physics - Phenomenology · Physics 2013-10-31 Joachim Kopp

Simple models of weakly interacting massive particles (WIMPs) predict dark matter annihilations into pairs of electroweak gauge bosons, Higgses or tops, which through their subsequent cascade decays produce a spectrum of gamma rays.…

High Energy Physics - Phenomenology · Physics 2015-05-20 Prateek Agrawal , Brian Batell , Patrick J. Fox , Roni Harnik

We report first results from the Cryogenic Dark Matter Search (CDMS II) experiment running with its full complement of 30 cryogenic particle detectors at the Soudan Underground Laboratory. This report is based on the analysis of data…

Astrophysics · Physics 2012-08-27 CDMS Collaboration

Bosonic superweakly interacting massive particles (super-WIMPs) are a candidate for warm dark matter. With the absorption of such a boson by a xenon atom these dark matter candidates would deposit an energy equivalent to their rest mass in…

Global fits of primary and secondary cosmic-ray (CR) fluxes measured by AMS-02 have great potential to study CR propagation models and search for exotic sources of antimatter such as annihilating dark matter (DM). Previous studies of AMS-02…

High Energy Astrophysical Phenomena · Physics 2019-06-14 Alessandro Cuoco , Jan Heisig , Lukas Klamt , Michael Korsmeier , Michael Krämer

Weakly Interacting Massive Particles (WIMPs) are one of the leading candidates for Dark Matter. We developed a model-independent method for determining the WIMP mass by using data (i.e., measured recoil energies) of direct detection…

High Energy Physics - Phenomenology · Physics 2009-02-02 Manuel Drees , Chung-Lin Shan

Low energy cosmic ray antideuterons provide a unique low background channel for indirect detection of dark matter. We compute the cosmic ray flux of antideuterons from hadronic annihilations of dark matter for various Standard Model final…

High Energy Physics - Phenomenology · Physics 2010-11-11 Yanou Cui , John D. Mason , Lisa Randall

Assuming a dark matter fraction $\Omega_{DM} = 0.27$ and a reduced Hubble constant $h = 0.73$, we obtain a value of 70 GeV/c$^2$ for the mass of the dark matter WIMP we have previously proposed. We also obtain a value for the annihilation…

The Alpha Magnetic Spectrometer (AMS-02) was installed on the International Space Station (ISS) and it has been collecting data successfully since May 2011. The main goals of AMS-02 are the search for cosmic anti-matter, dark matter and the…

Instrumentation and Detectors · Physics 2017-02-21 Zi-Yuan Li , Carlos Delgado , Francesca Giovacchini , Sadakazu Haino , Julia Hoffman

Galactic charged cosmic rays (notably electrons, positrons, antiprotons and light antinuclei) are powerful probes of dark matter annihilation or decay, in particular for candidates heavier than a few MeV or tiny evaporating primordial black…

High Energy Astrophysical Phenomena · Physics 2021-10-13 Yoann Génolini , Mathieu Boudaud , Marco Cirelli , Laurent Derome , Julien Lavalle , David Maurin , Pierre Salati , Nathanael Weinrich

The antiproton flux measurements from AMS-02 offer valuable information about the nature of dark matter, but their interpretation is complicated by large uncertainties in the modeling of cosmic ray propagation. In this work we present a…

High Energy Physics - Phenomenology · Physics 2023-03-15 Sowmiya Balan , Felix Kahlhoefer , Michael Korsmeier , Silvia Manconi , Kathrin Nippel

Measurements of the cosmic ray antiproton spectrum can be used to search for contributions from annihilating dark matter and to constrain the dark matter annihilation cross section. Depending on the assumptions made regarding cosmic ray…

High Energy Astrophysical Phenomena · Physics 2015-03-19 Dan Hooper , Tim Linden , Philipp Mertsch

Light dark matter is a compelling experimental target in light of stringent constraints on heavier WIMPs. However, for a sub-MeV WIMP, the universe is sufficiently well understood at temperatures below 10 MeV that there is no room for it to…

High Energy Physics - Phenomenology · Physics 2018-03-02 Daniel Green , Surjeet Rajendran

The interpretation of data from indirect detection experiments searching for dark matter annihilations requires computationally expensive simulations of cosmic-ray propagation. In this work we present a new method based on Recurrent Neural…

High Energy Astrophysical Phenomena · Physics 2021-12-21 Felix Kahlhoefer , Michael Korsmeier , Michael Krämer , Silvia Manconi , Kathrin Nippel

In this paper we examine whether indirect detection constraints on dark matter associated with a non-thermal history may be significantly improved when accounting for the presence of galactic substructure in the form of dark matter spikes.…

Cosmology and Nongalactic Astrophysics · Physics 2011-07-14 Pearl Sandick , Scott Watson

For explaining the AMS-02 cosmic positron excess, which was recently reported, we consider a scenario of thermally produced and decaying dark matter (DM) into the standard model (SM) leptons with an extremely small decay rate, \Gamma_{DM}…

High Energy Physics - Phenomenology · Physics 2014-05-02 Ki-Young Choi , Bumseok Kyae , Chang Sub Shin