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Scanning transmission electron microscopy (STEM) has become the technique of choice for quantitative characterization of atomic structure of materials, where the minute displacements of atomic columns from high-symmetry positions can be…

材料科学 · 物理学 2021-10-05 Kevin M. Roccapriore , Nicole Creange , Maxim Ziatdinov , Sergei V. Kalinin

The known direction of motion of dark matter particles relative to the Earth may be a key for their unambiguous identification even in the presence of backgrounds. We describe a prototype detector that is able to reconstruct direction…

The precise measurements of energy spectra of cosmic ray positrons and/or electrons by recent experiments show clear excesses above 10 GeV. Moreover, a potential sharp spectral feature was suggested by the Dark Matter Particle Explorer…

高能物理 - 唯象学 · 物理学 2020-04-29 Lei Feng , Zhaofeng Kang , Qiang Yuan , Peng-Fei Yin , Yi-Zhong Fan

Supersymmetry may be discovered at high energy colliders, through low energy precision measurements, and by dark matter searches. We present a comprehensive analysis of all available probes in minimal supergravity. This work extends…

高能物理 - 唯象学 · 物理学 2009-10-09 Jonathan L. Feng , Konstantin T. Matchev , Frank Wilczek

The Dark Matter Particle Explorer (DAMPE) is a satellite-borne detector designed to measure high energy cosmic-rays and $\gamma$-rays. As a key sub-detector of DAMPE, the Bismuth Germanium Oxide (BGO) imaging calorimeter is utilized to…

高能物理 - 实验 · 物理学 2023-08-09 Zhan-Fang Chen , Chuan Yue , Wei Jiang , Ming-Yang Cui , Qiang Yuan , Ying Wang , Cong Zhao , Yi-Feng Wei

The search for dark matter has been performed mainly for weakly interacting massive particles and massive compact halo objects, and the intermediate mass region has not been investigated experimentally. A method to search dark matter with…

仪器与探测器 · 物理学 2019-01-23 Akio Kawasaki

The DArk Matter Particle Explorer (DAMPE), a space-based high precision cosmic ray detector, has just reported the new measurement of the total electron plus positron energy spectrum up to 4.6 TeV. A notable feature in the spectrum is the…

高能天体物理现象 · 物理学 2018-02-28 Kun Fang , Xiao-Jun Bi , Peng-Fei Yin

The Dark Matter Particle Explorer (DAMPE) satellite detector announced its first result for measuring the cosmic-ray electron/positron (CRE) energy spectrum up to 4.6TeV, including a tentative peak-like event excess at (1.3-1.5)TeV. In this…

高能天体物理现象 · 物理学 2018-04-10 Shao-Feng Ge , Hong-Jian He , Yu-Chen Wang

DAMPE is a space-based mission designed as a high energy particle detector measuring cosmic-rays and $\gamma-$rays which was successfully launched on Dec.17, 2015. The BGO electromagnetic calorimeter is one of the key sub-detectors of DAMPE…

仪器与探测器 · 物理学 2017-04-06 Chuan Yue , Jingjing Zang , Tiekuang Dong , Xiang Li , Zhiyong Zhang , Stephan Zimmer , Wei Jiang , Yunlong Zhang , Daming Wei

The interaction rate of hypothesised dark matter particles in an Earth-bound detector is expected to undergo an annual modulation due to the planet's orbital motion. The DAMA experiment has observed such a modulation with high significance…

高能物理 - 实验 · 物理学 2020-04-24 Irene Bolognino

The DArk Matter Particle Explorer (DAMPE) has observed a tentative peak at $E\sim1.4~\TeV$ in the cosmic-ray electron spectrum. In this paper, we interpret this excess in the scotogenic type-II seesaw model. This model extends the canonical…

高能物理 - 唯象学 · 物理学 2018-06-22 Ran Ding , Zhi-Long Han , Lei Feng , Bin Zhu

DAMSA (DArk Messenger Searches at an Accelerator) is a novel short-baseline accelerator/beam dump experiment aimed at probing short-lived physics processes, including searches for evidence of a dark sector of particle physics and…

The General Antiparticle Spectrometer (GAPS) will carry out a sensitive dark matter search by measuring low-energy ($\mathrm{E} < 0.25 \mathrm{GeV/nucleon}$) cosmic ray antinuclei. The primary targets are low-energy antideuterons produced…

The General AntiParticle Spectrometer experiment (GAPS) is foreseen to carry out a dark matter search using low-energy cosmic ray antideuterons at stratospheric altitudes with a novel detection approach. A prototype flight from Taiki, Japan…

Galactic cosmic rays are mostly made up of energetic nuclei, with less than $1\%$ of electrons (and positrons). Precise measurement of the electron and positron component requires a very efficient method to reject the nuclei background,…

天体物理仪器与方法 · 物理学 2022-12-07 Zhihui Xu , Xiang Li , Mingyang Cui , Chuan Yue , Wei Jiang , Wenhao Li , Qiang Yuan

The DArk Matter Particle Explorer (DAMPE) recently reported an excess of electrons/positrons above expected background fluxes even when a double power-law background spectrum is assumed. Several dark matter models that involve TeV-scale…

高能天体物理现象 · 物理学 2019-05-03 Geoff Beck , Sergio Colafrancesco

Paleo-detectors are a recently proposed method for the direct detection of Dark Matter (DM). In such detectors, one would search for the persistent damage features left by DM--nucleus interactions in ancient minerals. Initial sensitivity…

Dark Matter (DM) comprising particles in the mass range of a few MeV to GeV is waiting to be explored, given the many theoretical models accommodating cosmological abundance. We hereby propose an experiment with the LHC proton beam of 7 TeV…

高能物理 - 实验 · 物理学 2016-09-04 Ashok Kumar , Archana Sharma

Particle tracking velocimetry in 3D is becoming an increasingly important imaging tool in the study of fluid dynamics, combustion as well as plasmas. We introduce a dynamic discrete tomography algorithm for reconstructing particle…

流体动力学 · 物理学 2015-01-23 Andreas Alpers , Peter Gritzmann , Dmitry Moseev , Mirko Salewski

We explore the sensitivity of the Deep Underground Neutrino Experiment (DUNE) near detector and the proposed DUNE-PRISM movable near detector to sub-GeV dark matter, specifically scalar dark matter coupled to the Standard Model via a…

高能物理 - 唯象学 · 物理学 2019-11-19 Valentina De Romeri , Kevin J. Kelly , Pedro A. N. Machado