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Dark matter (DM) refers to a new type of matter that may explain observed rotation curves of galaxies and the composite structure of the Universe. It may couple to the Standard Model particles via portals, which include the possibility of…

High Energy Physics - Experiment · Physics 2023-11-30 Vindhyawasini Prasad

One of the major challenges of modern physics is to decipher the nature of dark matter. Astrophysical observations provide ample evidence for the existence of an invisible and dominant mass component in the observable universe, from the…

Cosmology and Nongalactic Astrophysics · Physics 2015-09-04 Laura Baudis

We propose an X-ray mission called Xenia to search for decaying superweakly interacting Dark Matter particles (super-WIMP) with a mass in the keV range. The mission and its observation plan are capable of providing a major break through in…

Although the rocket-based X-ray Quantum Calorimetry (XQC) experiment was designed for X-ray spectroscopy, the minimal shielding of its calorimeters, its low atmospheric overburden, and its low-threshold detectors make it among the most…

Astrophysics · Physics 2008-11-26 Adrienne L. Erickcek , Paul J. Steinhardt , Dan McCammon , Patrick C. McGuire

We demonstrate that nuclear magnetic resonance based searches for dark matter (DM) have intrinsic and powerful sensitivity to dark photons and the axion-photon coupling. The reason is conceptually straightforward. An instrument such as…

High Energy Physics - Phenomenology · Physics 2025-05-23 Carl Beadle , Sebastian A. R. Ellis , Jacob M. Leedom , Nicholas L. Rodd

We propose a novel modification to the optical benches of space-based gravitational wave detectors (SGWDs) to enable the detection of axion-like dark matter (ALDM)-induced birefringence without altering the polarization of inter-spacecraft…

High Energy Physics - Phenomenology · Physics 2026-01-06 Run-Min Yao , Xiao-Jun Bi , Peng-Fei Yin , Qing-Guo Huang

The QCD axion stands as one of the most promising candidates for resolving the strong CP problem. However, the value of the axion's decay constant $f_a$ and, by extension, its mass $m_a$, remain uncertain within the framework of effective…

High Energy Physics - Phenomenology · Physics 2024-11-01 Qiaoli Yang , Runchao Huang

Axion dark matter differentiates the phase velocities of the circular-polarized photons. In Phys.Rev.Lett. 123 (2019) no.11, 111301, we have proposed a scheme to measure the phase difference by using a linear optical cavity. If the scheme…

High Energy Physics - Phenomenology · Physics 2019-12-20 Koji Nagano , Ippei Obata , Tomohiro Fujita , Yuta Michimura

Axions are among the most sought-after candidates for dark matter. In the ultralight regime, they could help alleviate puzzles in small scale cosmology. Searches for a halo of axion dark matter rely on the electromagnetic response to a…

High Energy Physics - Phenomenology · Physics 2023-12-08 Joshua Berger , Amit Bhoonah

Relativistic axions produced in decays of ${\mathcal O}(10^{-7}-10^{-2}$ $\text{eV})$ dark matter (DM) partially convert to photons after traversing the galactic magnetic field, giving rise to a signal observable by the Square Kilometer…

High Energy Physics - Phenomenology · Physics 2023-08-23 Arpan Kar , Tanmoy Kumar , Sourov Roy , Jure Zupan

We summarise the recent progress of the Axion Longitudinal Plasma HAloscope (ALPHA) Consortium, a new experimental collaboration to build a plasma haloscope to search for axions and dark photons. The plasma haloscope is a novel method for…

The Axion Dark Matter eXperiment (ADMX) was designed to detect ultra-weakly interacting relic axion particles by searching for their conversion to microwave photons in a resonant cavity positioned in a strong magnetic field. Given the…

We propose an experiment to search for QCD axion and axion-like-particle (ALP) dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying CP-odd nuclear moments such as an electric dipole moment. In…

High Energy Physics - Phenomenology · Physics 2014-05-30 Dmitry Budker , Peter W. Graham , Micah Ledbetter , Surjeet Rajendran , Alex Sushkov

We report the results from a haloscope search for axion dark matter in the $3.3\text{-}4.2~{\mu}$eV mass range. This search excludes the axion-photon coupling predicted by one of the benchmark models of "invisible" axion dark matter, the…

Antiferromagnetically doped topological insulators (A-TI) are among the candidates to host dynamical axion fields and axion-polaritons; weakly interacting quasiparticles that are analogous to the dark axion, a long sought after candidate…

High Energy Physics - Phenomenology · Physics 2019-09-25 David J. E. Marsh , Kin-Chung Fong , Erik W. Lentz , Libor Šmejkal , Mazhar N. Ali

We report the results of an axion dark matter search over an axion mass range of 9.39-9.51 ${\mu}$eV. A flux-driven Josephson parametric amplifier (JPA) was added to the cryogenic receiver chain. A system noise temperature of as low as 200…

We propose the Semiconductor-Quantum-Well Axion Radiometer Experiment ($\texttt{SQWARE}$) -- a new experimental platform for direct detection of axion dark matter in the meV mass range -- based on resonantly enhanced axion-photon conversion…

High Energy Physics - Phenomenology · Physics 2025-09-19 Jaanita Mehrani , Tao Xu , Andrey Baydin , Michael J. Manfra , Henry O. Everitt , Andrew J. Long , Kuver Sinha , Junichiro Kono , Shengxi Huang

Terrestrial searches for the conversion of dark matter axions or axion-like particles into photons inside magnetic fields are sensitive to the phase space structure of the local Milky Way halo. We simulate signals in a hypothetical future…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-29 Ciaran A. J. O'Hare , Anne M. Green

We show that Earth's natural environment can serve as a powerful probe for ultralight axion dark matter. In the presence of global geomagnetic fields, the axions with masses ranging from $10^{-15}\,{\rm eV}-10^{-13}\,{\rm eV}$ induce…

High Energy Physics - Phenomenology · Physics 2025-09-19 Atsushi Taruya , Atsushi Nishizawa , Yoshiaki Himemoto