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Direct detection of light dark matter (DM), below the GeV scale, through electron recoil can be efficient if DM has a velocity well above the virial value of $v\sim 10^{-3}$. We point out that if there is a long range attractive force…

High Energy Physics - Phenomenology · Physics 2021-09-14 Hooman Davoudiasl , Peter B. Denton , Julia Gehrlein

It is considered the detection of neutrinos moving from the opposite directions. The states of the particle of the detector interacting with the neutrinos are connected with the P-transformation. Hence only a half of neutrinos gives…

General Physics · Physics 2007-05-23 D. L. Khokhlov

The DAMA collaboration have claimed to detect particle dark matter (DM) via an annual modulation in their observed recoil event rate. This appears to be in strong disagreement with the null results of other experiments if interpreted in…

Astrophysics · Physics 2014-11-18 John March-Russell , Christopher McCabe , Matthew McCullough

In the leading paradigm of modern cosmology, about 80% of our Universe's matter content is in the form of hypothetical, as yet undetected particles. These do not emit or absorb radiation at any observable wavelengths, and therefore…

High Energy Physics - Phenomenology · Physics 2020-08-20 Riccardo Catena , Timon Emken , Nicola A. Spaldin , Walter Tarantino

The Deep Underground Neutrino Experiment (DUNE) is a long-baseline neutrino experiment designed to mainly investigate oscillation parameters, supernova physics and proton decay. Its far detector will be composed of four liquid argon time…

Instrumentation and Detectors · Physics 2022-02-09 Laura Paulucci

In this work, we propose a novel scenario to probe the interactions between dark matter (DM) particles and electrons, via hydrogen-atmosphere pulsating white dwarfs (DAVs) in globular clusters. In this special configuration, the DM…

High Energy Astrophysical Phenomena · Physics 2018-12-05 Jia-Shu Niu , Tianjun Li , Weikai Zong , Hui-Fang Xue , Yang Wang

Direct detection experiments search for the interactions of Dark Matter (DM) particles with nuclei in terrestrial detectors. But if these interactions are sufficiently strong, DM particles may scatter in the Earth, affecting their…

High Energy Physics - Phenomenology · Physics 2017-01-13 Bradley J. Kavanagh , Riccardo Catena , Chris Kouvaris

The ArDM experiment, a 1 ton liquid argon TPC/Calorimeter, is designed for the detection of dark matter particles which can scatter off the spinless argon nuclei. These events producing a recoiling nucleus will be discerned by their light…

Instrumentation and Detectors · Physics 2008-12-09 C. Regenfus

We report the detection of the Galactic nuclear disc in line-of-sight kinematics of stars, measured with infrared spectroscopy from APOGEE. This stellar component of the nuclear disc has an extent and rotation velocity V ~ 120kms comparable…

Astrophysics of Galaxies · Physics 2015-10-21 Ralph Schönrich , Michael Aumer , Stuart E. Sale

In hierarchical structure formation models of disk galaxies, a dark matter disk forms as massive satellites are preferentially dragged into the disk-plane where they dissolve. Here, we quantify the importance of this dark disk for direct…

Astrophysics · Physics 2010-02-17 T. Bruch , J. Read , L. Baudis , G. Lake

Low-mass stars ($M\lesssim 2\,M_\odot$) ignite helium under degenerate conditions, eventually causing a nuclear run-away -- the helium flash. The alpha-capture process on $^{14}$N produces a large amount of $^{18}$F, whose subsequent decay…

Solar and Stellar Astrophysics · Physics 2026-05-20 Pablo Martínez-Miravé , Irene Tamborra , Georg Raffelt

Dark matter may be charged under dark electromagnetism with a dark photon that kinetically mixes with the Standard Model photon. In this framework, dark matter will collect at the center of the Earth and annihilate into dark photons, which…

High Energy Physics - Phenomenology · Physics 2017-10-05 Jonathan L. Feng , Jordan Smolinsky , Philip Tanedo

High-velocity particles ( $v>v_\mathrm{esc}$) in the Milky Way are rare but nonetheless important to characterize due to their impact on dark matter (DM) direct detection experiments. We select halos similar in mass to the Milky Way in a…

Astrophysics of Galaxies · Physics 2025-02-26 Aidan DeBrae , Peter Behroozi , Nicolas Garavito-Camargo

We initiate the study of novel thermal dark matter (DM) scenarios where present-day annihilation of DM in the galactic center produces boosted stable particles in the dark sector. These stable particles are typically a subdominant DM…

High Energy Physics - Phenomenology · Physics 2015-06-19 Kaustubh Agashe , Yanou Cui , Lina Necib , Jesse Thaler

Accurate measurements of cosmic ray proton flux are essential for studying the modulation processes of cosmic rays during the solar activity cycle. A proton flux measurement method, based on ground-based neutron monitor (NM) data and deep…

Solar and Stellar Astrophysics · Physics 2025-05-28 Pengwei Zhao , Jianqi Yan , Alex P. Leung , Jie Feng

We propose an experiment to test the hypothesis that the reported anomaly on atmospheric neutrino fluxes is due to nu_mu <-> nu_x oscillations. It will rely both on a disappearance technique, exploiting the method of the dependence of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Curioni , G. Mannocchi , L. Periale , P. Picchi , F. Pietropaolo , S. Ragazzi

We consider current observational constraints on the electromagnetic charge of dark matter. The velocity dependence of the scattering cross-section through the photon gives rise to qualitatively different constraints than standard dark…

High Energy Physics - Phenomenology · Physics 2011-03-22 Samuel D. McDermott , Hai-Bo Yu , Kathryn M. Zurek

We present first results from a spectroscopic survey of 2000 F/G stars 0.5--5kpc from the Galactic plane, obtained with the 2dF facility on the AAT. These data show the mean rotation velocity of the thick disk about the Galactic center a…

Astrophysics · Physics 2009-11-07 Gerard Gilmore , Rosemary F. G. Wyse , John E. Norris

Dark matter (DM) particles captured by the Sun can produce high energy electrons outside the Sun through annihilating into meta-stable mediators. The corresponding cosmic-ray electron signals observed by the space-based experiments will be…

High Energy Physics - Phenomenology · Physics 2022-04-27 Mohammadreza Zakeri , Yu-Feng Zhou

Dark photon is one of the promising candidates of light dark matter and could be detected by using its interaction with standard model particles via kinetic mixings. Here, we propose a feasible approach to detect the dark photons by…

Quantum Physics · Physics 2024-12-03 Suirong He , De He , Yufen Li , Li Gao , Xianing Feng , Hao Zheng , L. F. Wei
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