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Dark matter particles with sufficiently large interactions with ordinary matter can scatter in the Earth before reaching and scattering in a detector. This induces a modulation in the signal rate with a period of one sidereal day. We…

High Energy Physics - Phenomenology · Physics 2025-11-17 Xavier Bertou , Ansh Desai , Timon Emken , Rouven Essig , Tomer Volansky , Tien-Tien Yu

Using data from the $\nu$-cleus detector, based on the surface of the Earth, we place constraints on dark matter in the form of Strongly Interacting Massive Particles (SIMPs) which interact with nucleons via nuclear-scale cross sections.…

High Energy Physics - Phenomenology · Physics 2017-11-21 Jonathan H. Davis

The main background above 3\,MeV for in-beam nuclear astrophysics studies with $\gamma$-ray detectors is caused by cosmic-ray induced secondaries. The two commonly used suppression methods, active and passive shielding, against this kind of…

Instrumentation and Detectors · Physics 2015-03-25 T. Szücs , D. Bemmerer , T. P. Reinhardt , K. Schmidt , M. P. Takács , A. Wagner , L. Wagner , D. Weinberger , K. Zuber

Background rates in several pixel array detectors are investigated with an eye toward using them with hard, >6 keV, x-rays in very low-rate experiments - e.g. at signal rates <0.1/s/cm^2. Measured background event rates for a detector with…

Instrumentation and Detectors · Physics 2023-03-01 Alfred Q. R. Baron , Daisuke Ishikawa

We explore detection prospects of a non-standard dark sector in the context of boosted dark matter. We focus on a scenario with two dark matter particles of a large mass difference, where the heavier candidate is secluded and interacts with…

High Energy Physics - Phenomenology · Physics 2015-06-23 Kyoungchul Kong , Gopolang Mohlabeng , Jong-Chul Park

Pseudoscalar couplings between Standard-Model quarks and dark matter are normally not considered relevant for dark-matter direct-detection experiments because they lead to velocity-suppressed scattering cross-sections in the…

High Energy Physics - Phenomenology · Physics 2014-07-28 Keith R. Dienes , Jason Kumar , Brooks Thomas , David Yaylali

LUX-ZEPLIN (LZ) collaboration has achieved the strongest constraint on weak-scale dark matter (DM)-nucleon spin-independent (SI) scattering cross section in a large region of parameter space. In this paper, we take a complementary approach…

High Energy Physics - Phenomenology · Physics 2024-02-08 Tarak Nath Maity , Ranjan Laha

We present a new multi-component dark matter model with a novel experimental signature that mimics neutral current interactions at neutrino detectors. In our model, the dark matter is composed of two particles, a heavier dominant component…

High Energy Physics - Phenomenology · Physics 2016-06-22 Kaustubh Agashe , Yanou Cui , Lina Necib , Jesse Thaler

We argue that the detection of neutrino signature from the Earth's core can effectively probe the coupling of heavy dark matter ($m_{\chi}>10^{4}$ GeV) to nucleons. We first note that direct searches for dark matter (DM) in such a mass…

High Energy Physics - Phenomenology · Physics 2015-03-05 Guey-Lin Lin , Yen-Hsun Lin , Fei-Fan Lee

We propose new searches for $n^\prime$, a dark baryon that can mix with the Standard Model neutron. We show that IsoDAR, a proposal to place an intense cyclotron near a large-volume neutrino detector deep underground, can look for $n\to…

High Energy Physics - Phenomenology · Physics 2023-05-10 Matheus Hostert , David McKeen , Maxim Pospelov , Nirmal Raj

Dark matter candidates arising in models of particle physics incorporating weak scale supersymmetry may produce detectable signals through their annihilation into neutrinos, photons, or positrons. A large number of relevant experiments are…

Astrophysics · Physics 2009-10-09 Jonathan L. Feng , Konstantin T. Matchev , Frank Wilczek

The non-detection of GeV-scale WIMPs has led to increased interest in more general candidates, including sub-GeV dark matter. Direct detection experiments, despite their high sensitivity to WIMPs, are largely blind to sub-GeV dark matter.…

High Energy Physics - Phenomenology · Physics 2021-08-12 Christopher V. Cappiello , John F. Beacom

Boosted dark matter (BDM) is a well-motivated class of dark matter (DM) candidates in which a small component of DM is relativistic at the present time. We lay the foundation for BDM searches via hadronic interactions in large liquid-argon…

High Energy Physics - Phenomenology · Physics 2021-05-26 Joshua Berger , Yanou Cui , Mathew Graham , Lina Necib , Gianluca Petrillo , Dane Stocks , Yun-Tse Tsai , Yue Zhao

The existence of a cosmic neutrino background -- the analogue of the cosmic microwave background -- is a fundamental prediction of standard big bang cosmology. Up to now, the observational evidence for its existence is rather indirect and…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-21 Andreas Ringwald

We propose here a set of new methods to directly detect light mass dark matter through its scattering with abundant atmospheric muons or accelerator beams. Firstly, we plan to use the free cosmic-ray muons interacting with dark matter in a…

Sub-GeV dark matter particles evade standard direct detection studies since their typical energies in the galactic halo do not allow for detectable recoil of the heavy nuclei in the detectors. However, it was noted that if the dark matter…

High Energy Physics - Phenomenology · Physics 2024-09-11 Richie Diurba , Helena Kolešová , Gailyn Monroe

We consider a scenario in which dark matter particles are accelerated to semi-relativistic velocities through their scattering with the Diffuse Supernova Neutrino Background. Such a subdominant, but more energetic dark matter component can…

High Energy Physics - Phenomenology · Physics 2024-03-15 Valentina De Romeri , Anirban Majumdar , Dimitrios K. Papoulias , Rahul Srivastava

The neutrino floor is a barrier in the parameter space of weakly interacting massive particles (WIMPs) below which discovery is impeded due to an almost irreducible background of neutrinos. Directional gas time projection chambers could…

Cosmology and Nongalactic Astrophysics · Physics 2020-09-28 Ciaran A. J. O'Hare

Neutrino oscillations in the Earth matter may introduce peculiar modulations in the supernova (SN) neutrino spectra. The detection of this effect has been proposed as diagnostic tool for the neutrino mass hierarchy at "large" 1-3 leptonic…

High Energy Physics - Phenomenology · Physics 2015-03-20 Enrico Borriello , Sovan Chakraborty , Alessandro Mirizzi , Pasquale Dario Serpico , Irene Tamborra

The sensitivity of direct detection of dark matter (DM) approaches the so-called neutrino floor below which it is hard to disentangle the DM candidate from the background neutrino. In this work we consider the scenario that no DM signals…

High Energy Physics - Phenomenology · Physics 2020-12-02 Qing-Hong Cao , An-Kang Wei , Qian-Fei Xiang