Results 61 to 70 of about 88,834 (168)
Simplified models for dark matter face their consistent completions
Physical Review D, 2017 Simplified dark matter models have been recently advocated as a powerful tool to exploit the complementarity between dark matter direct detection, indirect detection and LHC experimental probes. Focusing on pseudoscalar mediators between the dark and visible sectors, we show that the simplified dark matter model phenomenology departs significantly from
Gonçalves, Dorival +2 more
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A New Challenge for Dark Matter Models
, 2021 Cold dark matter (CDM) has faced a number of challenges mainly at small scales, such as the too-big-to-fail problem, and core-cusp density profile of dwarf galaxies. Such problems were argued to have a solution either in the baryonic physics sector or in modifying the nature of dark matter to be self-interacting, or self-annihilating, or ultra-light ...
Safarzadeh, Mohammadtaher, Loeb, Abraham
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Search for WIMPs at future μ + μ + colliders
Journal of High Energy PhysicsWeakly interacting massive particles (WIMPs) with electroweak charges, such as the wino and the Higgsino, stand out as natural candidates for dark matter in the universe. In this paper, we study the search for WIMPs at future multi-TeV μ + μ + colliders.
Hajime Fukuda +3 more
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The Astrophysical Journal, 2008 A halo model is presented which possesses a constant phase space density (Q) core followed by a radial CDM-like power law decrease in Q. The motivation for the core is the allowance for a possible primordial phase space density limit such as the Tremaine-Gunn upper bound. The space density profile derived from this model has a constant density core and
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Multicomponent dark matter with collider implications
Journal of High Energy PhysicsThe present work aims to study an extension of the Standard Model (SM) that addresses the prominent SM shortcomings, i.e., can explain the neutrino mass, the dark matter (DM) content, and the matter-antimatter asymmetry of the Universe.
Laura Covi +3 more
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Millicharged particles from proton bremsstrahlung in the atmosphere
Journal of High Energy PhysicsLight millicharged particles can be copiously produced from meson decays in cosmic ray collisions with the atmosphere, leading to detectable signals in large underground neutrino detectors.
Mingxuan Du, Rundong Fang, Zuowei Liu
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Perturbative unitarity violation in radiative capture transitions to dark matter bound states
Journal of High Energy PhysicsWe investigate the formation of bound states of non-relativistic dark matter particles subject to long-range interactions through radiative capture.
Martin Beneke +4 more
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Relext: A New Dark Matter Tool for the Exploration of Dark Matter Models
We present the {\tt C++} program \texttt{RelExt} for Standard Model (SM) extensions that feature a Dark Matter (DM) candidate. The tool allows to efficiently scan the parameter spaces of these models to find parameter combinations that lead to relic density values which are compatible with the measured value within the uncertainty specified by the user.
Capucha, Rodrigo +4 more
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The Einasto model for dark matter haloes
Astronomy & Astrophysics, 2022 Context. The Einasto model has become one of the most popular models for describing the density profile of dark matter haloes. There have been relatively few comprehensive studies on the dynamical structure of the Einasto model, mainly because only a limited number of properties can be calculated analytically. Aims.
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Revisiting the decoupling limit of the Georgi-Machacek model with a scalar singlet
Journal of High Energy PhysicsWe study the connection between collider and dark matter phenomenology in the singlet extension of the Georgi-Machacek model. In this framework, the singlet scalar serves as a suitable thermal dark matter (DM) candidate. Our focus lies on the region v χ <
Geneviève Bélanger +6 more
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