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Jet-Origin Identification and Its Application at an Electron-Positron Higgs Factory
/ Liang, Hao (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Zhu, Yongfeng (Peking U., SKLNPT) ; Wang, Yuexin (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS ; CCAST World Lab, Beijing) ; Che, Yuzhi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Zhou, Chen (Peking U., SKLNPT) ; Qu, Huilin (CERN) ; Ruan, Manqi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS)
To enhance the scientific discovery power of high-energy collider experiments, we propose and realize the concept of jet origin identification that categorizes jets into 5 quark species $(b,c,s,u,d)$, 5 anti-quarks $(\bar{b},\bar{c},\bar{s},\bar{u},\bar{d})$, and the gluon. Using state-of-the-art algorithms and simulated $\nu\bar{\nu}H, H\rightarrow jj$ events at 240 GeV center-of-mass energy at the electron-positron Higgs factory, the jet origin identification simultaneously reaches jet flavor tagging efficiencies ranging from 67% to 92% for bottom, charm, and strange quarks, and jet charge flip rates of 7% to 24% for all quark species. [...]
arXiv:2310.03440.-
2024-05-31 - 8 p.
- Published in : Phys. Rev. Lett. 132 (2024) 221802
Fulltext: 2310.03440 - PDF; Publication - PDF;
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Fully heavy tetraquark states and their evidences in LHC observations
/ liu, Ming-Sheng (Hunan Normal U. ; Hunan, LDQSQC ; SICQEA, Changsha) ; Liu, Feng-Xiao (Hunan Normal U. ; Hunan, LDQSQC ; SICQEA, Changsha) ; Zhong, Xian-Hui (Hunan Normal U. ; Hunan, LDQSQC ; SICQEA, Changsha) ; Zhao, Qiang (Beijing, Inst. High Energy Phys. ; North China Electric Power U., Beijing ; Beijing, GUCAS ; SICQEA, Changsha)
Stimulated by the exciting progress on the observations of the fully-charmed tetraquarks at LHC, we carry out a combined analysis of the mass spectra and fall-apart decays of the $1S$-, $2S$-, and $1P$-wave $cc\bar{c}\bar{c}$ states in a nonrelativistic quark model (NRQM). It is found that the $X(6600)$ structure observed in the di-$J/\psi$ invariant mass spectrum can be explained by the $1S$-wave state $T_{(4c)0^{++}}(6550)$. [...]
arXiv:2006.11952.-
2024-04-01 - 14 p.
- Published in : Phys. Rev. D 109 (2024) 076017
Fulltext: 2006.11952 - PDF; Publication - PDF;
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One-to-one correspondence reconstruction at the electron-positron Higgs factory
/ Wang, Yuexin (Beijing, Inst. High Energy Phys.) ; Liang, Hao (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS ; Vanderbilt U.) ; Zhu, Yongfeng (Peking U., SKLNPT) ; Che, Yuzhi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Xia, Xin (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Qu, Huilin (CERN) ; Zhou, Chen (Peking U., SKLNPT) ; Zhuang, Xuai (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Ruan, Manqi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS)
We propose one-to-one correspondence reconstruction for electron-positron Higgs factories. [...]
arXiv:2411.06939.
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18.
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Beam test results of NDL Low Gain Avalanche Detectors (LGAD)
/ Xiao, S. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Alderweireldt, S. (CERN) ; Ali, S. (Taiwan, Inst. Phys.) ; Allaire, C. (CERN) ; Agapopoulou, C. (Orsay, LAL) ; Atanov, N. (Dubna, JINR) ; Ayoub, M.K. (Beijing, Inst. High Energy Phys.) ; Barone, G. (Brookhaven) ; Benchekroun, D. (Casablanca U.) ; Buzatu, A. (Taiwan, Inst. Phys.) et al.
To meet the timing resolution requirement of up-coming High Luminosity LHC (HL-LHC), a new detector based on the Low-Gain Avalanche Detector(LGAD), High-Granularity Timing Detector (HGTD), is under intensive research in ATLAS. Two types of IHEP-NDL LGADs(BV60 and BV170) for this update is being developed by Institute of High Energy Physics (IHEP) of Chinese Academic of Sciences (CAS) cooperated with Novel Device Laboratory (NDL) of Beijing Normal University and they are now under detailed study. [...]
arXiv:2005.07323.-
2021-02-11 - 16 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 989 (2021) 164956
Fulltext: PDF;
In : 12th international "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD), Hiroshima, Japan, 14 - 18 Dec 2019, pp.164956
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Radiation campaign of HPK prototype LGAD sensors for the High-Granularity Timing Detector (HGTD)Radiation Campaign of HPK Prototype LGAD sensors for the High-Granularity Timing Detector (HGTD)
/ Shi, X. (Beijing, Inst. High Energy Phys.) ; Ayoub, M.K. (Beijing, Inst. High Energy Phys.) ; da Costa, J. Barreiro Guimarães (Beijing, Inst. High Energy Phys.) ; Cui, H. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Kiuchi, R. (Beijing, Inst. High Energy Phys.) ; Fan, Y. (Beijing, Inst. High Energy Phys.) ; Han, S. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Huang, Y. (Beijing, Inst. High Energy Phys.) ; Jing, M. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Liang, Z. (Beijing, Inst. High Energy Phys.) et al.
We report on the results of a radiation campaign with neutrons and protons of Low Gain Avalanche Detectors (LGAD) produced by Hamamatsu (HPK) as prototypes for the High-Granularity Timing Detector (HGTD) in ATLAS. Sensors with an active thickness of 50~$\mu$m were irradiated in steps of roughly 2$\times$ up to a fluence of $3\times10^{15}~\mathrm{n_{eq}cm^{-2}}$. [...]
arXiv:2004.13895.-
2020-11-01 - 15 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 979 (2020) 164382
Fulltext: PDF;
In : 12th international "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD), Hiroshima, Japan, 14 - 18 Dec 2019, pp.164382
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Layout and Performance of HPK Prototype LGAD Sensors for the High-Granularity Timing Detector
/ Yang, X. (CUST, SKLPDE) ; Alderweireldt, S. (CERN) ; Atanov, N. (BITP, Kiev ; Dubna, JINR) ; Ayoub, M.K. (Beijing, Inst. High Energy Phys.) ; Barreiro Guimarães da Costa, J. (Beijing, Inst. High Energy Phys.) ; Castillo García, L. (Barcelona, IFAE) ; Chen, H. (CUST, SKLPDE) ; Christie, S. (UC, Santa Cruz, Inst. Part. Phys.) ; Cindro, V. (Stefan Inst., Ljubljana) ; Cui, H. (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) et al.
The High-Granularity Timing Detector is a detector proposed for the ATLAS Phase II upgrade. The detector, based on the Low-Gain Avalanche Detector (LGAD) technology will cover the pseudo-rapidity region of $2.4<|\eta|<4.0$ with two end caps on each side and a total area of 6.4 $m^2$. [...]
arXiv:2003.14071.-
2020-11-11 - 17 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 980 (2020) 164379
Fulltext: PDF;
In : 12th international "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD), Hiroshima, Japan, 14 - 18 Dec 2019, pp.164379
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Probing Neutral Triple Gauge Couplings at the LHC and Future Hadron Colliders
/ Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai ; Tsinghua U., Beijing ; Tsinghua U., Beijing, CHEP) ; Xiao, Rui-Qing (King's Coll. London ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai)
We study probes of neutral triple gauge couplings (nTGCs) at the LHC and the proposed 100TeV $pp$ colliders, and compare their sensitivity reaches with those of the proposed $e^+ e^-$ colliders. The nTGCs provide a unique window to the new physics beyond the Standard Model (SM) because they can arise from SM effective field theory (SMEFT) operators that respect the full electroweak gauge group $SU(2)_L\otimes U(1)_Y$ of the SM only at the level of dimension-8 or higher. [...]
arXiv:2206.11676; KCL-PH-TH/2022-35; CERN-TH-2022-089.-
2023-02-01 - 57 p.
- Published in : Phys. Rev. D 107 (2023) 035005
Fulltext: 2206.11676 - PDF; Publication - PDF;
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Accumulating evidence for the associated production of a new Higgs boson at the LHC
/ Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Fang, Yaquan (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Fischer, Oliver (Liverpool U.) ; Bhattacharya, Srimoy (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Kumar, Mukesh (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Malwa, Elias (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Mellado, Bruce (U. Witwatersrand, Johannesburg, Sch. Phys. ; iThemba LABS) ; Rapheeha, Ntsoko (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Ruan, Xifeng (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Sha, Qiyu (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS)
In the last decades, the Standard Model (SM) of particle physics has been extensively tested and confirmed, with the announced discovery of the Higgs boson in 2012 being the last missing puzzle piece. Even though since then the search for new particles and interactions has been further intensified, the experiments ATLAS and CMS at the Large Hadron Collider (LHC) at CERN did not find evidence for the direct production of a new state. [...]
arXiv:2109.02650; ICPP-057; PSI-PR-21-21; ZU-TH 38/21; CERN-TH-2021-129; LTH 1267.-
2023-12-01 - 9 p.
- Published in : Phys. Rev. D 108 (2023) 115031
Fulltext: 2109.02650 - PDF; Publication - PDF;
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