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We report a search on a sub-MeV fermionic dark matter absorbed by electrons with an outgoing active neutrino using the 0.63 tonne-year exposure collected by PandaX-4T liquid xenon experiment. No significant signals are observed over the…

The LUXE experiment aims at studying high-field QED in electron-laser and photon-laser interactions, with the 16.5 GeV electron beam of the European XFEL and a laser beam with power of up to 350 TW. The experiment will measure the spectra…

Instrumentation and Detectors · Physics 2021-12-20 O. Borysov

This paper presents the first results from the Dandelion experiment, a directional detection, which searches for 1 meV dark photon dark matter. We use a spherical mirror to convert dark photons into standard millimeter-wavelength photons…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-18 I. Ourahou , S. Savorgnano , C. Beaufort , M. Bastero-Gil , J. Bounmy , A. Catalano , J. Macias-Perez , D. Santos , C. Smith , F. Naraghi , D. Tourres , F. Vezzu

It is often asserted that quantum effects can be observed in coincidence detection rates or other correlations, but never in the rate of single-photon detection. We observe nonclassical interference in a singles rate, thanks to the…

Quantum Physics · Physics 2009-11-06 K. J. Resch , J. S. Lundeen , A. M. Steinberg

Dual-phase liquid xenon (LXe) detectors lead the direct search for particle dark matter. Understanding the signal production process of nuclear recoils in LXe is essential for the interpretation of LXe based dark matter searches. Up to now,…

Instrumentation and Detectors · Physics 2018-12-12 Elena Aprile , Matthew Anthony , Qing Lin , Zach Greene , Patrick de Perio , Fei Gao , Joseph Howlett , Guillaume Plante , Yun Zhang , Tianyu Zhu

Active and sterile neutrinos may acquire "dark moments" via one-loop diagrams with a massless dark photon and new light particles in the loop. Due to the kinetic mixing between the dark photon and the Standard Model photon, neutrinos would…

High Energy Physics - Phenomenology · Physics 2024-08-14 Gonzalo Herrera , Ian M. Shoemaker

The data collected by ATIC, PPB-BETS, FERMI-LAT and HESS all indicate that there is an electron/positron excess in the cosmic ray energy spectrum above $\sim$ 100 GeV, although different instrumental teams do not agree on the detailed…

High Energy Astrophysical Phenomena · Physics 2013-01-18 Yi-Zhong Fan , Bing Zhang , Jin Chang

We propose a new spectroscopic method for measuring weak transitions in cold and trapped atoms, which exploits the long interaction times and tight confinement offered by dark optical traps together with an electron shelving technique to…

Atomic Physics · Physics 2009-09-25 L. Khaykovich , N. Friedman , S. Baluschev , D. Fathi , N. Davidson

We investigate the synchrotron emission (both intensity and morphology) associated with generic dark matter particles and make predictions for the PLANCK experiment using the FERMI data and a model for the astrophysical sources. Our results…

Astrophysics of Galaxies · Physics 2015-03-19 Timur Delahaye , Céline Bœhm , Joseph Silk

Dual phase xenon detectors are widely used in experimental searches for galactic darkmatter particles. The origin of single electron backgrounds following prompt scintillation and proportional scintillation signals in these detectors is not…

Dark matter is typically assumed not to couple to the photon at tree level. While annihilation to photons through quark loops is often considered in indirect detection searches, such loop-level effects are usually neglected in direct…

High Energy Physics - Phenomenology · Physics 2023-07-27 Joe Bramante , Melissa Diamond , Christopher V. Cappiello , Aaron C. Vincent

Dark photon is a massive vector particle which couples to the physical photon through the kinetic mixing term. Such particles, if exist, are produced in photon beams and, in particular, in laser radiation. Due to the oscillations between…

High Energy Physics - Phenomenology · Physics 2019-06-19 V. V. Flambaum , I. B. Samsonov , H. B. Tran Tan

The Heavy Photon Search experiment (HPS) at the Thomas Jefferson National Accelerator Facility searches for electro-produced dark photons. We report results from the 2016 Engineering Run consisting of 10608/nb of data for both the prompt…

A dark photon is a hypothetical particle that is similar to a photon with a small mass and interacts very weakly with ordinary matter through a kinetic mixing with the ordinary photon. In this paper, we propose a new way to probe the…

High Energy Physics - Phenomenology · Physics 2024-02-13 Predee Tantirangsri , Daris Samart , Chakrit Pongkitivanichkul

We explore the sensitivity of the parity-violating electron scattering (PVES) asymmetry in both elastic and deep-inelastic scattering to the properties of a dark photon. Given advances in experimental capabilities in recent years, there are…

High Energy Physics - Phenomenology · Physics 2022-07-05 A. W. Thomas , X. G. Wang , A. G. Williams

The non-observation of dark matter (DM) by direct detection experiments suggests that any new interaction of DM with the Standard Model (SM) should be very weak. One of the simplest scenarios to achieve this is a dark sector that is charged…

High Energy Physics - Phenomenology · Physics 2019-07-26 Patrick Foldenauer

The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of $1.4\times 10^{17}$ protons on dump collected in 2021. No evidence for a dark photon…

High Energy Physics - Experiment · Physics 2024-09-19 The NA62 collaboration

This is a summary of experimental results on photons, leptons, and heavy quarks presented at Quark Matter 2008. A first measurement of the bottom to charm contribution to the lepton spectrum has given experimental indication for the…

Nuclear Experiment · Physics 2008-11-26 Richard Seto