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Macroscopic dark matter (macros) refers to a broad class of alternative candidates to particle dark matter with still unprobed regions of parameter space. Prior work on macros has considered elastic scattering to be the dominant energy…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-26 Jagjit Singh Sidhu

We show that dark matter direct detection experiments are sensitive to the existence of particles with a small effective charge (for instance, via couplings to a kinetically mixed, low-mass dark photon). Our forecasts do not depend on these…

High Energy Physics - Phenomenology · Physics 2024-08-01 Ella Iles , Saniya Heeba , Katelin Schutz

We forecast the expected cosmological constraints from a combination of probes of both the universal expansion rate and matter perturbation growth, in the form of weak lensing tomography, galaxy tomography, supernovae, and the cosmic…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-10 Shahab Joudaki , Manoj Kaplinghat

{\tenrm The possibility of detecting supersymmetric dark matter is examined within the framework of the minimal supergravity model (MSGM), where the $\tilde{Z}_{1}$ is the LSP for almost the entire parameter space. A brief discussion is…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. Arnowitt , Pran Nath

We show that dark-matter candidates with large masses and large nuclear interaction cross sections are detectable with terrestrial radar systems. We develop our results in close comparison to successful radar searches for tiny meteoroids,…

High Energy Physics - Phenomenology · Physics 2023-04-14 Pawan Dhakal , Steven Prohira , Christopher V. Cappiello , John F. Beacom , Scott Palo , John Marino

It has been proposed that an additional U(1) sector of hidden photons could account for the Dark Matter observed in the Universe. When passing through an interface of materials with different dielectric properties, hidden photons can give…

We perform a global analysis of cosmological observables in generalized cosmologies which depart from $\Lambda$CDM models by allowing non-vanishing curvature $\Omega_k\neq 0$, dark energy with equation of state with $\omega\neq -1$, the…

High Energy Physics - Phenomenology · Physics 2011-06-17 M. C. Gonzalez-Garcia , Michele Maltoni , Jordi Salvado

A new method of searching for dark matter in the form of weakly interacting massive particles (WIMP) has been developed with the direct detection of the low energy nuclear recoils observed in a massive target (ultimately many tons) of ultra…

Constraints on the indirect detection of dark matter are usually obtained from observations of astrophysical objects -- the Galactic Center, dwarf galaxies, M31, etc. Here we propose instead to look for the annihilation or decay of dark…

High Energy Physics - Phenomenology · Physics 2021-10-27 Teresa Marrodán Undagoitia , Werner Rodejohann , Tim Wolf , Carlos E. Yaguna

We present the first comprehensive discussion of constraints on the cosmic neutrino background (C$\nu$B) overdensity, including theoretical, experimental and cosmological limits for a wide range of neutrino masses and temperatures.…

High Energy Physics - Phenomenology · Physics 2023-01-18 Martin Bauer , Jack D. Shergold

In this article I review two data analysis methods for determining the mass (and eventually the spin-independent cross section on nucleons) of Weakly Interacting Massive Particles with positive signals from direct Dark Matter detection…

High Energy Physics - Phenomenology · Physics 2009-11-19 Chung-Lin Shan

Some form of missing energy may account for the difference between the observed cosmic matter density and the critical density. Two leading candidates are a cosmological constant and quintessence (a time-varying, inhomogenous component with…

Astrophysics · Physics 2009-09-15 Greg Huey , Limin Wang , R. Dave , R. R. Caldwell , Paul J. Steinhardt

After two decades of efforts to identify the enigmatic dark matter that comprises the dominant form of matter in our galaxy, the mass range for viable candidates appears to have been reduced by more than 50 orders of magnitude. Positive…

Astrophysics · Physics 2009-10-30 Robert L. Oldershaw

We demonstrate that current and planned underground neutrino experiments could offer a powerful probe of few-MeV dark matter when combined with a nearby high-intensity low-to-medium energy electron accelerator. This experimental setup, an…

High Energy Physics - Phenomenology · Physics 2015-11-18 Eder Izaguirre , Gordan Krnjaic , Maxim Pospelov

The current standard model of cosmology, $\Lambda$CDM, requires dark matter to make up around $25\%$ of the total energy budget of the Universe. Yet, quite puzzlingly, there appears to be no candidate particle in the current Standard Model…

Cosmology and Nongalactic Astrophysics · Physics 2015-07-06 David M. Jacobs , Glenn D. Starkman , Amanda Weltman

I review prospects for detecting dark matter in space-based experiments, with an emphasis on recent developments. I propose the ``Martha Stewart criterion'' for identifying dark matter candidates that are particularly worth investigation…

Astrophysics · Physics 2009-11-10 Jonathan L. Feng

Our tightest upper limit on the sum of neutrino mass eigenvalues $M_\nu$ comes from cosmological observations that will improve substantially in the near future, enabling a detection. The combination of the Baryon Acoustic Oscillation…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-28 Zhen Pan , Lloyd Knox

The nature of the dark matter of the Universe is yet unknown and most likely is connected with new physics. The search for its composition is under way through direct and indirect detection. Fundamental physical aspects such as energy…

High Energy Physics - Phenomenology · Physics 2009-11-07 Ivone F. M. Albuquerque , Jodi Lamoureux , George F. Smoot

The results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ~ 4 and ~ 50 GeV. The Multiple Coulomb Scattering of muons…

High Energy Physics - Experiment · Physics 2019-08-14 G. Giacomelli

We study the question of whether coherent neutrino scattering can occur on macroscopic scales, leading to a significant increase of the detection cross section. We concentrate on radiative neutrino scattering on atomic electrons (or on free…

High Energy Physics - Phenomenology · Physics 2018-11-14 Evgeny Akhmedov , Giorgio Arcadi , Manfred Lindner , Stefan Vogl
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