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CERN Document Server 找到 654 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.62 秒. 
1.
Wormhole-Induced ALP Dark Matter / Cheong, Dhong Yeon (IPAP, Seoul ; Yonsei U.) ; Hamaguchi, Koichi (Tokyo U. ; Tokyo U., IPMU) ; Kanazawa, Yoshiki (Tokyo U.) ; Lee, Sung Mook (CERN) ; Nagata, Natsumi (Tokyo U.) ; Park, Seong Chan (IPAP, Seoul ; Yonsei U. ; Korea Inst. Advanced Study, Seoul)
Non-perturbative gravitational effects induce explicit global symmetry breaking terms within axion models. [...]
CERN-TH-2024-195 ; arXiv:2411.07713.
- 25.
Fulltext
2.
Performance of the CMS high-level trigger during LHC Run 2 / CMS Collaboration
The CERN LHC provided proton and heavy ion collisions during its Run 2 operation period from 2015 to 2018. Proton-proton collisions reached a peak instantaneous luminosity of 2.1 $ \times $ 10$^{34}$ cm$^{-2}$s$^{-1} $, twice the initial design value, at $ \sqrt{s}= $ 13 TeV. [...]
arXiv:2410.17038; CMS-TRG-19-001; CERN-EP-2024-259; CMS-TRG-19-001-003.- Geneva : CERN, 2024-11-22 - 62 p. - Published in : JINST 19 (2024) P11021 Fulltext: 2410.17038 - PDF; FERMILAB-PUB-24-0717-CMS - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
3.
Measurement of the background in the CMS muon detector in ${p}{p}$-collisions at $\sqrt{s} = 13$ $\,\text {Te}\hspace{-.08em}\text {V}$ / CMS Muon Collaboration
The CMS detector, including its muon system, has been operating at the CERN LHC in increasingly challenging conditions for about 15 years. The muon detector was designed to provide excellent triggering and track reconstruction for muons produced in proton–proton collisons at an instantaneous luminosity ($\mathcal {L}$) of $1 \times 10^{34}$ cm$^{-2}$s$^{-1}$. [...]
2024 - 43 p. - Published in : Eur. Phys. J. C 84 (2024) 955 Fulltext: PDF;
4.
Impact of magnetic field on the stability of the CMS GE1/1 GEM detector operation / Abbas, M (KIT, Karlsruhe) ; Abbott, S (UC, Davis) ; Abbrescia, M (Bari U. ; INFN, Bari) ; Abdalla, H (Alexandria U. ; American U., Cairo) ; Abdelalim, A (Alexandria U. ; Zewail City Sci. Technol., Giza) ; AbuZeid, S (Ain Shams U., Cairo ; INFN, Pavia) ; Aebi, D (Texas A-M) ; Agapitos, A (Peking U.) ; Ahmad, A (NCP, Islamabad) ; Ahmed, A (Delhi Tech. U.) et al.
The Gas Electron Multiplier (GEM) detectors of the GE1/1 station of the CMS experiment have been operated in the CMS magnetic field for the first time on the 7$^{th}$ of October 2021. During the magnetic field ramps, several discharge phenomena were observed, leading to instability in the GEM High Voltage (HV) power system. [...]
2023 - 24 p. - Published in : JINST 18 (2023) P11029 Fulltext: PDF;
5.
Effective Theory Approach for Axion Wormholes / Cheong, Dhong Yeon (IPAP, Seoul ; Yonsei U. ; CERN) ; Park, Seong Chan (IPAP, Seoul ; Yonsei U. ; Korea Inst. Advanced Study, Seoul) ; Shin, Chang Sub (Chungnam Natl. U. ; IBS, Daejeon, CTPU ; Korea Inst. Advanced Study, Seoul)
We employ the effective field theory approach to analyze the characteristics of Euclidean wormholes within axion theories. Using this approach, we obtain non-perturbative instantons in various complex scalar models with and without a non-minimal coupling to gravity, as well as models featuring the $R^2$ term for a range of coupling values. [...]
arXiv:2310.11260; CERN-TH-2023-184.- 2024-07-04 - 25 p. - Published in : JHEP 2407 (2024) 039 Fulltext: document - PDF; 2310.11260 - PDF;
6.
Production and validation of industrially produced large-sized GEM foils for the Phase-2 upgrade of the CMS muon spectrometer / CMS Muon Collaboration
The upgrade of the CMS detector for the high luminosity LHC (HL-LHC) will include gas electron multiplier (GEM) detectors in the end-cap muon spectrometer. Due to the limited supply of large area GEM detectors, the Korean CMS (KCMS) collaboration had formed a consortium with Mecaro Co., Ltd. [...]
arXiv:2309.16330.- 2023-09-27 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1057 (2023) 168723 Fulltext: PDF;
7.
Evidence for the Higgs boson decay to a $Z$ boson and a photon at the LHC / ATLAS Collaboration
The first evidence for the Higgs boson decay to a $Z$ boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision data sets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. [...]
arXiv:2309.03501; CERN-EP-2023-157; CMS-HIG-23-002.- Geneva : CERN, 2024-01-11 - 32 p. - Published in : Phys. Rev. Lett. 132 (2024) 021803 Fulltext: 2309.03501 - PDF; fb04f556ba10912b08405b9ca563b99a - PDF; Fulltext from Publisher: PDF; External links: Physics Synopsis; Fermilab Library Server
8.
Cosmological Consequences of Kinetic Mixing between Photon and Dark PhotonCosmic birefringence by dark photon / Lee, Sung Mook (Yonsei U. ; IPAP, Seoul) ; Kang, Dong Woo (Korea Inst. Advanced Study, Seoul ; CERN) ; Gong, Jinn-Ouk (Ewha Women's U., Seoul ; APCTP, Pohang) ; Jeong, Donghui (Korea Inst. Advanced Study, Seoul ; Penn State U., University Park, IGC) ; Jung, Dong-Won (Yonsei U. ; IPAP, Seoul) ; Park, Seong Chan (Yonsei U. ; IPAP, Seoul ; Korea Inst. Advanced Study, Seoul)
We study the kinetic mixing between the cosmic microwave background (CMB) photon and the birefringent dark photon. These birefringent dark photon may exist in parity-violating dark sector, for example, through the coupling to axion field. [...]
arXiv:2307.14798; CERN-TH-2022-117; KIAS-P22049; APCTP-Pre2022-015.- 2024-08-23 - 17 p. - Published in : JCAP 2408 (2024) 037 Fulltext: PDF;
9.
Production and validation of industrially produced large-sized GEM foils for the Phase-2 upgrade of the CMS muon spectrometer / Abbas, Syed Mohsin (IPM, Tehran) ; Abbrescia, Marcello (INFN, Bari ; Bari U.) ; Abdalla, Hassan Fathy (Cairo, Acad. Sci. Res. Tech.) ; Abdelalim, Ahmed Ali (Cairo, Acad. Sci. Res. Tech.) ; Abuzeid Hassan, Shimaa Abdelwahed (INFN, Pavia) ; Aebi, Devin Michael (Texas A-M) ; Agapitos, Antonis (Peking U.) ; Ahmad, Ashfaq (Quaid-i-Azam U.) ; Ahmed, Asar (Delhi U.) ; Ahmed, Waqar (Quaid-i-Azam U.) et al.
The upgrade of the CMS detector for the high luminosity LHC (HL-LHC) will include gas electron multiplier (GEM) detectors in the end-cap muon spectrometer. Due to the limited supply of large area GEM detectors, the Korean CMS (KCMS) collaboration had formed a consortium with Mecaro Co., Ltd. to serve as a supplier of GEM foils with area of approximately 0.6 m$^{2}$. The consortium has developed a double-mask etching technique for production of these large-sized GEM foils. This article describes the production, quality control, and quality assessment (QA/QC) procedures and the mass production status for the GEM foils. [...]
CMS-NOTE-2023-006; CERN-CMS-NOTE-2023-006.- Geneva : CERN, 2023 - 18 p. Fulltext: PDF;
10.
Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle / Belle Collaboration
We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$ states of bottomonium at Belle. [...]
arXiv:2108.03497 ; BELLE-CONF-2102.
- 12.
Fulltext

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