Open AccessDissertation
Signals of Particle Dark Matter
TLDR
In this article, the authors explore methods of detecting dark matter particles, with some emphasis on several dark matter models of current interest Detection in this context means observation of an experimental signature correlated with dark matter interactions with Standard Model particles.Abstract:
This thesis explores methods of detecting dark matter particles, with some emphasis on several dark matter models of current interest Detection in this context means observation of an experimental signature correlated with dark matter interactions with Standard Model particles This includes recoils of nuclei or electrons from dark matter scattering events, and direct or indirect observation of particles produced by dark matter annihilationread more
Citations
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A Chandra View of Dark Matter in Early-Type Galaxies
Philip J. Humphrey,David A. Buote,Fabio Gastaldello,Luca Zappacosta,James S. Bullock,Fabrizio Brighenti,Fabrizio Brighenti,William G. Mathews +7 more
TL;DR: In this article, a Chandra study of mass profiles in 7 elliptical galaxies, of which 3 have galaxy-scale and 4 group-scale halos demarcated at 1E13Msun, is presented.
Posted Content
Decaying Dark Matter can explain the e excesses
TL;DR: In this paper, the authors consider the DM decay hypothesis and show that it can explain the cosmic ray excesses compatibly with all constraints, and can be tested by dedicated HESS observations of the Galactic Ridge.
The PA M ELA Positron Excess from A nnihilations into a Light Boson
Ilias Cholis,Lisa Goodenough +1 more
TL;DR: In this article, the authors revisited an earlier proposal, wherein the dark matter annihilates into a new light (GeV) boson, which is kinematically constrained to go to hard leptonic states, without anti-protons or π0's.
Journal Article
Review of mathematics, numerical factors, and corrections for dark matter experiments based on elastic nuclear recoil
J.D. Lewin,P.F. Smith +1 more
TL;DR: In this article, the authors present a systematic derivation and discussion of the practical formulae needed to design and interpret direct searches for nuclear recoil events caused by hypothetical weakly interacting dark matter particles.
First dark matter search results from a surface run of the 10-L DMTPC directional dark matter detector
S. P. Ahlen,James Battat,T. S. Caldwell,Cosmin Deaconu,William Fedus,F. Golub,Shawn W. Henderson,Andrew Inglis,A. C. Kaboth,A. Lee,José L. López,Jocelyn Monroe,T. Sahin,G. Sciolla,N. Skvorodnev,H. Tomita,H. Wellenstein,I. Wolfe,R. K. Yamamoto,H. Yegoryan,D. Dujmic,Peter H. Fisher,Gordon E Kohse,Robert K Lanza Jr +23 more
TL;DR: In this paper, the authors present the first dark matter limit from DMTPC from a surface run at MIT, in an analysis window of 80-200 keV recoil energy, based on a 35.7 g-day exposure, they set a 90% C.L. upper limit on the spin-dependent WIMP-proton cross section of 2.0 × 10 − 33 cm 2 for 115 GeV/c2.
References
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Particle dark matter: Evidence, candidates and constraints
TL;DR: The current status of particle dark matter, including experimental evidence and theoretical motivations, including direct and indirect detection techniques, is discussed in this paper. But the authors focus on neutralinos in models of supersymmetry and Kaluza-Klein dark matter in universal extra dimensions.
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An anomalous positron abundance in cosmic rays with energies 1.5-100 GeV
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TL;DR: It is found that the positron fraction increases sharply over much of that range, in a way that appears to be completely inconsistent with secondary sources, and is concluded that a primary source, be it an astrophysical object or dark matter annihilation, is necessary.
Journal ArticleDOI
Supersymmetric Dark Matter
TL;DR: In this article, the neutralino is considered as a superpartner in many supersymmetric theories, and the cosmological abundance of neutralino and the event rates for both direct and indirect detection schemes are discussed.