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17 papers
Low Radon Concentration Measurement with a Radon-Dissolved Liquid Scintillator Pilot Detector
Qian-Yun Li, Ming-Xuan Li, Ren-Ming-Jie Li +7
We construct a high sensitivity radon pilot detector using liquid scintillator dissolved radon for the CDEX rare-event searches program. The CDEX-10 project employs a germanium det…
Compton Scattering Energy Spectrum for Si and Ge Systems
Chen-Kai Qiao, Hsin-Chang Chi, Shin-Ted Lin +3
In the present work, we study the atomic Compton Scattering which could have great impacts on dark matter direct detection experiments. We give a quantitative analysis of the Compt…
Relativistic Impulse Approximation in Compton Scattering
Chen-Kai Qiao, Hsin-Chang Chi, Lei Zhang +5
Relativistic impulse approximation (RIA) has been widely used in atomic, condensed matter, nuclear, and elementary particle physics. In former treatments of RIA formulation, differ…
Performances of a prototype point-contact germanium detector immersed in liquid nitrogen for light dark matter search
H. Jiang, L. T. Yang, Q. Yue +70
The CDEX-10 experiment searches for light weakly-interacting massive particles, a form of dark matter, at the China JinPing underground laboratory, where approximately 10 kg of ger…
Photoionization of Xe and Rn from the relativistic random-phase theory
Chen-Kai Qiao, Hsin-Chang Chi, Ming-Chien Hsu +5
Photoionization cross section , asymmetry parameter , and polarization parameters , , of Xe and Rn are calculated in the fully relativistic…
Response of gadolinium doped liquid scintillator to charged particles: measurement based on intrinsic U/Th contamination
Qiang Du, Shin-Ted Lin, Han-Tao He +7
A measurement is reported for the response to charged particles of a liquid scintillator named EJ-335 doped with 0.5% gadolinium by weight. This liquid scintillator was used as the…
Limits on light WIMPs with a 1 kg-scale germanium detector at 160 eVee physics threshold at the China Jinping Underground Laboratory
L. T. Yang, H. B. Li, Q. Yue +65
We report results of a search for light weakly interacting massive particle (WIMP) dark matter from the CDEX-1 experiment at the China Jinping Underground Laboratory (CJPL). Constr…
The first result on 76Ge neutrinoless double beta decay from CDEX-1 experiment
Li Wang, Qian Yue, KeJun Kang +69
We report the first result on Ge-76 neutrinoless double beta decay from CDEX-1 experiment at China Jinping Underground Laboratory. A mass of 994 g p-type point-contact high purity…
Measurement of photoelectron yield of the prototype for the CDEX-10 liquid argon detector
Qing-Hao Chen, Qian Yue, Jian-Ping Cheng +7
The China Dark Matter Experiment (CDEX) is a low background experiment at China Jinping Underground Laboratory (CJPL) designed to directly detect dark matter with a high-purity Ger…
Measurement of the center-of-mass energies at BESIII via the di-muon process
M. Ablikim, M. N. Achasov, X. C. Ai +407
From 2011 to 2014, the BESIII experiment collected about 5 fb data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmoni…
Precision measurement of the integrated luminosity of the data taken by BESIII at center of mass energies between 3.810 GeV and 4.600 GeV
M. Ablikim, M. N. Achasov, X. C. Ai +408
From December 2011 to May 2014, about 5 of data were taken with the BESIII detector at center-of-mass energies between 3.810 GeV and 4.600 GeV to study the charmonium…
Evidence for at center-of-mass energies from 4.009 to 4.360 GeV
BESIII Collaboration, M. Ablikim, M. N. Achasov +405
Using data samples collected at center-of-mass energies of = 4.009, 4.230, 4.260, and 4.360 GeV with the BESIII detector operating at the BEPCII collider, we perform a s…
Measurement of intrinsic radioactive backgrounds from Cs-137 and U/Th chains in CsI(Tl) crystals
S. K. Liu, Q. Yue, S. T. Lin +7
The inorganic CsI(Tl) crystal scintillator is a candidate served as an anti-compton detector for China Dark matter EXperiment (CDEX). Studying the intrinsic radiopurity of CsI(Tl)…
Study of the material photon and electron background and the liquid argon detector veto efficiency of the CDEX-10 experiment
Jian Su, Zhi Zeng, Hao MA +67
The China Dark Matter Experiment (CDEX) is located at the China Jinping underground laboratory (CJPL) and aims to directly detect the WIMP flux with high sensitivity in the low mas…
The CDEX-1 1 kg Point-Contact Germanium Detector for Low Mass Dark Matter Searches
Ke-Jun Kang, Qian Yue, Yu-Cheng Wu +72
The CDEX Collaboration has been established for direct detection of light dark matter particles, using ultra-low energy threshold p-type point-contact germanium detectors, in China…
Introduction of the CDEX experiment
Ke-Jun Kang, Jian-Ping Cheng, Jin Li +61
Weakly Interacting Massive Particles (WIMPs) are the candidates of dark matter in our universe. Up to now any direct interaction of WIMP with nuclei has not been observed yet. The…
Design and Construction of the BESIII Detector
The BESIII Collaboration
This paper will discuss the design and construction of BESIII, which is designed to study physics in the tau-charm energy region utilizing the new high luminosity BEPCII double rin…