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Axions, originally proposed to solve the strong CP problem of quantum chromodynamics, emerge now as leading candidates of WISP dark matter. The rich phenomenology associated to the light and stable QCD axion can be described as an effective…

Astronomical observations from small galaxies to the largest scales in the universe can be consistently explained by the simple idea of dark matter. The nature of dark matter is however still unknown. Empirically it cannot be any of the…

Nuclear Experiment · Physics 2013-11-26 Paolo Gondolo

The axion is a highly motivated elementary particle which could address two fundamental questions in physics - the strong CP problem and the dark matter mystery. Experimental searches for this hypothetical particle have started to reach…

High Energy Physics - Phenomenology · Physics 2021-10-28 Yannis K. Semertzidis , SungWoo Youn

Anomaly detection is the process of finding data points that deviate from a baseline. In a real-life setting, anomalies are usually unknown or extremely rare. Moreover, the detection must be accomplished in a timely manner or the risk of…

Machine Learning · Computer Science 2019-04-26 Mariem Ben Fadhel , Kofi Nyarko

The next generation of telescopes will yield a substantial increase in the availability of high-resolution spectroscopic data for thousands of exoplanets. The sheer volume of data and number of planets to be analyzed greatly motivate the…

Earth and Planetary Astrophysics · Physics 2023-08-16 Roy T. Forestano , Konstantin T. Matchev , Katia Matcheva , Eyup B. Unlu

High-intensity neutron beams, such as those available at the European Spallation Source (ESS), provide new opportunities for fundamental discoveries. Here we discuss a novel Ramsey neutron-beam experiment to search for ultralight axion dark…

High Energy Physics - Phenomenology · Physics 2024-10-31 P. Fierlinger , M. Holl , D. Milstead , V. Santoro , W. M. Snow , Y. V. Stadnik

The axion is arguably one of the best motivated candidates for dark matter. For a decay constant greater than about 10^9 GeV, axions are dominantly produced non-thermally in the early universe and hence are "cold", their velocity dispersion…

High Energy Physics - Phenomenology · Physics 2016-12-30 Andreas Ringwald

In this letter we point out the possibility to study new physics in the neutrino sector using dark matter detectors based on liquid xenon. These are characterized by very good spatial resolution and extremely low thresholds for electron…

High Energy Physics - Phenomenology · Physics 2015-06-22 Pilar Coloma , Patrick Huber , Jonathan M. Link

Convolutional Neural Networks (CNNs) have demonstrated potential for the real-time analysis of data from gravitational-wave detector networks for the specific case of signals from coalescing compact-object binaries such as black-hole…

Instrumentation and Methods for Astrophysics · Physics 2026-02-05 Vasileios Skliris , Michael R. K. Norman , Patrick J. Sutton

We propose experimental schemes for detection an axionic condensate supposed to be cosmic dark matter. Various procedures are considered in dependence on the value of the axion mass. There are well known indications that a large part of the…

Astrophysics · Physics 2007-05-23 Peter Vorob'ev , Igor' Kolokolov

One of the important unknowns of current cosmology concerns the effects of the large scale distribution of matter on the formation and evolution of dark matter haloes and galaxies. One main difficulty in answering this question lies in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-04-14 Marius Cautun , Rien van de Weygaert , Bernard J. T. Jones , Carlos S. Frenk , Wojcieh A. Hellwing

We study the prospects for detecting gamma-rays from decaying Dark Matter (DM), focusing in particular on gravitino DM in R-parity breaking vacua. Given the substantially different angular distribution of the predicted gamma-ray signal with…

Astrophysics · Physics 2009-01-06 Gianfranco Bertone , Wilfried Buchmuller , Laura Covi , Alejandro Ibarra

There is an urgent need for a paradigm shift from group-wise comparisons to individual diagnosis in diffusion MRI (dMRI) to enable the analysis of rare cases and clinically-heterogeneous groups. Deep autoencoders have shown great potential…

Large-volume neutrino experiments are ideal for testing boosted dark matter (BDM) scenarios. We propose, for the first time, an approach to utilize knockout neutrons by detecting de-excitation $\gamma$ rays and coincident captured neutrons…

High Energy Physics - Phenomenology · Physics 2024-09-10 Koun Choi , Jong-Chul Park

The hypothetical axion particle (of unknown mass) is a leading candidate for dark matter (DM). Many experiments search for axions with microwave cavities, where an axion may convert into a cavity photon, leading to a feeble excess in the…

Quantum Physics · Physics 2022-09-08 Anthony J. Brady , Christina Gao , Roni Harnik , Zhen Liu , Zheshen Zhang , Quntao Zhuang

Indirect searches for dark matter are based on detecting an anomalous flux of photons, neutrinos or cosmic-rays produced in annihilations or decays of dark matter candidates gravitationally accumulated in heavy cosmological objects, like…

High Energy Astrophysical Phenomena · Physics 2020-10-09 Carlos Pérez de los Heros

We have proposed a new approach to search for axion dark matter with an optical ring cavity [Phys. Rev. Lett. 121, 161301 (2018)]. The coupling of photons to axions or axion-like particles makes a modulated difference in the phase velocity…

Instrumentation and Detectors · Physics 2020-03-25 Yuta Michimura , Yuka Oshima , Taihei Watanabe , Takuya Kawasaki , Hiroki Takeda , Masaki Ando , Koji Nagano , Ippei Obata , Tomohiro Fujita

The next generation of axion direct detection experiments may rule out or confirm axions as the dominant source of dark matter. We develop a general likelihood-based framework for studying the time-series data at such experiments, with a…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-13 Joshua W. Foster , Nicholas L. Rodd , Benjamin R. Safdi

Astrometry -- the precise measurement of positions and motions of celestial objects -- has emerged as a promising avenue for characterizing the dark matter population in our Galaxy. By leveraging recent advances in simulation-based…

Cosmology and Nongalactic Astrophysics · Physics 2022-01-06 Siddharth Mishra-Sharma

The idea of searching for gravitational waves using cavities in strong magnetic fields has recently received significant attention. Specifically, discussions focus on cavities with relatively small volumes, which are currently employed in…

General Relativity and Quantum Cosmology · Physics 2023-08-23 Kristof Schmieden , Matthias Schott