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Possible Manifestation of a Non-Pointness of the Electron in $e^+e^-$ Annihilation Reaction at Centre of Mass Energies 55-207 GeV
/ Chen, Yutao (Hefei, CUST) ; Lin, Chih-Hsun (Taiwan, Inst. Phys.) ; Liu, Minghui (Hefei, CUST) ; Sakharov, Alexander S. (Manhattan Coll., Riverdale ; CERN) ; Ulbricht, Jürgen (Zurich, ETH) ; Zhao, Jiawei (Hefei, CUST)
The experimental data from VENUS, TOPAS, OPAL, DELPHI, ALEPH and L3 collaborations, collected from 1989 to 2003, are applied to study the QED framework through direct contact interaction terms approach, using the annihilation reaction $\rm e^+ e^-\rightarrow \gamma\gamma(\gamma)$. The analysis involves performing of a $\chi^{2}$ test to detect the presence of an excited electron $e^{*}$ and evidence of non-point like behavior in the $e^+e^-$ annihilation zone. [...]
arXiv:2210.11149.-
2023-07-10 - 32 p.
- Published in : Physics 5 (2023) 752-783
Fulltext: 2210.11149 - PDF; Publication - PDF;
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2.
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Isotopic Composition of Light Nuclei in Cosmic Rays: Results from AMS-01
/ AMS-01 Collaboration
The variety of isotopes in cosmic rays allows us to study different aspects of the processes that cosmic rays undergo between the time they are produced and the time of their arrival in the heliosphere. In this paper, we present measurements of the isotopic ratios $^2$H/$^4$He, $^3$He/$^4$He, $^6$Li/$7$Li, $7$Be/($^9$Be+$^{10}$Be), and $^{10}$B/$^{11}$B in the range 0.2-1.4 GeV of kinetic energy per nucleon. [...]
arXiv:1106.2269.-
2011 - 12 p.
- Published in : Astrophys. J. 736 (2011) 105
Fulltext: PDF; External link: Preprint
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3.
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Phase-Programmable Gaussian Boson Sampling Using Stimulated Squeezed Light
/ Zhong, Han-Sen (Hefei, NSRL ; Hefei, CUST) ; Deng, Yu-Hao (Hefei, NSRL ; Hefei, CUST) ; Qin, Jian (Hefei, NSRL ; Hefei, CUST) ; Wang, Hui (Hefei, NSRL ; Hefei, CUST) ; Chen, Ming-Cheng (Hefei, NSRL ; Hefei, CUST) ; Peng, Li-Chao (Hefei, NSRL ; Hefei, CUST) ; Luo, Yi-Han (Hefei, NSRL ; Hefei, CUST) ; Wu, Dian (Hefei, NSRL ; Hefei, CUST) ; Gong, Si-Qiu (Hefei, NSRL ; Hefei, CUST) ; Su, Hao (Hefei, NSRL ; Hefei, CUST) et al.
We report Gaussian boson sampling (GBS) experiments which produce up to 113 photon detection events out of a 144-mode photonic circuit. A new high-brightness and scalable quantum light source is developed, exploring the idea of stimulated emission of squeezed photons, which has simultaneously near-unity purity and efficiency. [...]
arXiv:2106.15534.-
2021 - 9 p.
- Published in : Phys. Rev. Lett. 127 (2021) 180502
Fulltext: PDF;
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4.
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The calibration and electron energy reconstruction of the BGO ECAL of the DAMPE detector
/ Zhang, Zhiyong (CUST, SKLPDE) ; Wang, Chi (CUST, SKLPDE) ; Dong, Jianing (CUST, SKLPDE) ; Wei, Yifeng (CUST, SKLPDE) ; Wen, Sicheng (CUST, SKLPDE ; Purple Mountain Observ.) ; Zhang, Yunlong (CUST, SKLPDE) ; Li, Zhiying (CUST, SKLPDE) ; Feng, Changqing (CUST, SKLPDE) ; Gao, Shanshan (CUST, SKLPDE) ; Shen, ZhongTao (CUST, SKLPDE) et al.
The DArk Matter Particle Explorer (DAMPE) is a space experiment designed to search for dark matter indirectly by measuring the spectra of photons, electrons, and positrons up to 10 TeV. The BGO electromagnetic calorimeter (ECAL) is its main sub-detector for energy measurement. [...]
DAMPE-CONF-2016-001; arXiv:1602.07015; DAMPE-CONF-2016-001.-
2016-11-11 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 836 (2016) 98-104
Preprint: PDF; External link: Preprint
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5.
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Development of FEB Configuration Test Board for ATLAS NSW Upgrade
/ Lu, Houbing (Natl. U. Defense Tech., Hunan) ; Li, Feng (USTC, Hefei) ; Miao, Peng (USTC, Hefei) ; Hu, Kun (USTC, Hefei) ; Zhang, Zhilei (USTC, Hefei) ; Sun, Rongqi (USTC, Hefei) ; Ma, Qingli (Natl. U. Defense Tech., Hunan) ; Jin, Ge (USTC, Hefei)
The FEB(front end board) configuration test board is developed aiming at meeting the requirement of testing the new generation ASIC(application-specific integrated circuit) chips and its configuration system for ATLAS NSW(New Small Wheel) upgrade, In this paper, some functions are developed in terms of the configurations of the key chips on the FEB, VMM3 and TDS2 using GBT-SCA. Additionally, a flexible communication protocol is designed, verifying the whole data link. [...]
arXiv:1806.04038.-
2019-07-16 - 5 p.
- Published in : IEEE Trans. Nucl. Sci. 66 (2019) 2028-2032
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6.
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Performance in beam tests of carbon-enriched irradiated Low Gain Avalanche Detectors for the ATLAS High Granularity Timing Detector
/ Ali, S. (Taiwan, Inst. Phys.) ; Arnold, H. (NIKHEF, Amsterdam) ; Auwens, S.L. (Nijmegen U., IMAPP ; IJCLab, Orsay) ; Beresford, L.A. (DESY) ; Boumediene, D.E. (LPC, Clermont-Ferrand) ; Burger, A.M. (LPC, Clermont-Ferrand) ; Cadamuro, L. (IJCLab, Orsay) ; Castillo García, L. (Barcelona, IFAE) ; Corpe, L.D. (LPC, Clermont-Ferrand) ; Da Cunha Sargedas de Sousa, M.J. (USTC, Hefei) et al.
The High Granularity Timing Detector (HGTD) will be installed in the ATLAS experiment to mitigate pile-up effects during the High Luminosity (HL) phase of the Large Hadron Collider (LHC) at CERN. Low Gain Avalanche Detectors (LGADs) will provide high-precision measurements of the time of arrival of particles at the HGTD, improving the particle-vertex assignment. [...]
arXiv:2303.07728.-
2023-05-02 - 20 p.
- Published in : JINST 18 (2023) P05005
Fulltext: 2303.07728 - PDF; document - PDF;
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7.
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CEPC Conceptual Design Report: Volume 2 - Physics & Detector
/ CEPC Study Group Collaboration
The Circular Electron Positron Collider (CEPC) is a large international scientific facility proposed by the Chinese particle physics community to explore the Higgs boson and provide critical tests of the underlying fundamental physics principles of the Standard Model that might reveal new physics. [...]
arXiv:1811.10545 ; IHEP-CEPC-DR-2018-02 ; IHEP-EP-2018-01 ; IHEP-TH-2018-01.
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2018 - 424.
Fulltext
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8.
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The DArk Matter Particle Explorer mission
/ DAMPE Collaboration
The DArk Matter Particle Explorer (DAMPE), one of the four scientific space science missions within the framework of the Strategic Pioneer Program on Space Science of the Chinese Academy of Sciences, is a general purpose high energy cosmic-ray and gamma-ray observatory, which was successfully launched on December 17th, 2015 from the Jiuquan Satellite Launch Center. The DAMPE scientific objectives include the study of galactic cosmic rays up to $\sim 10$ TeV and hundreds of TeV for electrons/gammas and nuclei respectively, and the search for dark matter signatures in their spectra. [...]
arXiv:1706.08453.-
2017-10 - 19 p.
- Published in : Astropart. Phys. 95 (2017) 6-24
Preprint: PDF;
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9.
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A possible interpretation for $X(6900)$ observed in four-muon final state by LHCb -- A light Higgs-like boson?
/ Zhu, Jian-Wen (USTC, Hefei ; Hefei, CUST) ; Guo, Xing-Dao (XZIT, Xuzhou) ; Zhang, Ren-You (USTC, Hefei ; Hefei, CUST) ; Ma, Wen-Gan (USTC, Hefei ; Hefei, CUST) ; Li, Xue-Qian (Nankai U.)
A peak structure of $J/\psi$ pair production around $6.9~{\rm GeV}$ was observed and analyzed by the LHCb collaboration using the Run I and II data of LHC. [...]
arXiv:2011.07799.
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13 p.
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10.
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CEPC Technical Design Report: Accelerator
/ CEPC Study Group Collaboration
The Circular Electron Positron Collider (CEPC) is a large scientific project initiated and hosted by China, fostered through extensive collaboration with international partners. The complex comprises four accelerators: a 30 GeV Linac, a 1.1 GeV Damping Ring, a Booster capable of achieving energies up to 180 GeV, and a Collider operating at varying energy modes (Z, W, H, and ttbar). [...]
arXiv:2312.14363; IHEP-CEPC-DR-2023-01; IHEP-AC-2023-01.-
2024-06-03 - 1106 p.
- Published in : Radiat. Detect. Technol. Methods 8 (2024) 1-1105
Fulltext: 2312.14363 - PDF; Publication - PDF;
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