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CERN Document Server 187 records found  1 - 10próximoend  jump to record: Search took 1.20 seconds. 
1.
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
2.
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;
3.
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;
4.
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;
5.
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
6.
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;
7.
Search for new physics in the $ \tau $ lepton plus missing transverse momentum final state in proton-proton collisions at $ \sqrt{s} = $ 13 TeV / CMS Collaboration
A search for physics beyond the standard model (SM) in the final state with a hadronically decaying tau lepton and a neutrino is presented. This analysis is based on data recorded by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to a total integrated luminosity of 138 fb$ ^{-1} $. [...]
arXiv:2212.12604; CMS-EXO-21-009; CERN-EP-2022-268; CMS-EXO-21-009-003.- Geneva : CERN, 2023-09-08 - 29 p. - Published in : JHEP 2309 (2023) 051 Fulltext: 2212.12604 - PDF; cab833f2b3ca575cbbd5884765500a7b - PDF; CMS-EXO-21-009-arXiv - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
8.
Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at $\sqrt{s}= 7$ and 8 TeV / ATLAS Collaboration
A combination of measurements of the inclusive top-quark pair production cross-section performed by ATLAS and CMS in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV at the LHC is presented. The cross-sections are obtained using top-quark pair decays with an opposite-charge electron-muon pair in the final state and with data corresponding to an integrated luminosity of about 5 fb$^{-1}$ at $\sqrt{s}=7$ TeV and about 20 fb$^{-1}$ at $\sqrt{s}=8$ TeV for each experiment. [...]
arXiv:2205.13830; CERN-EP-2021-222; CMS-TOP-18-014; CERN-LPCC-2022-03.- 2023-07-27 - 59 p. - Published in : JHEP 2307 (2023) 213 Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
9.
Quality control of mass-produced GEM detectors for the CMS GE1/1 muon upgrade / Abbas, M. (KIT, Karlsruhe) ; Abbrescia, M. (Bari Polytechnic ; INFN, Bari) ; Abdalla, H. (Ain Shams U., Cairo ; American U., Cairo) ; Abdelalim, A. (Ain Shams U., Cairo ; British U. in Egypt) ; AbuZeid, S. (Ain Shams U., Cairo) ; Agapitos, A. (Peking U.) ; Ahmad, A. (NCP, Islamabad) ; Ahmed, A. (Delhi Tech. U.) ; Ahmed, W. (NCP, Islamabad) ; Aimè, C. (Pavia U. ; INFN, Pavia) et al.
The series of upgrades to the Large Hadron Collider, culminating in the High Luminosity Large Hadron Collider, will enable a significant expansion of the physics program of the CMS experiment. However, the accelerator upgrades will also make the experimental conditions more challenging, with implications for detector operations, triggering, and data analysis. [...]
arXiv:2203.12037.- 2022-07-01 - 45 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1034 (2022) 166716 Fulltext: PDF;
10.
Search for a heavy resonance decaying into a top quark and a W boson in the lepton+jets final state at $ \sqrt{s} $ = 13 TeV / CMS Collaboration
A search for a heavy resonance decaying into a top quark and a W boson in proton-proton collisions at $\sqrt{s} =$ 13 TeV is presented. The data analyzed were recorded with the CMS detector at the LHC and correspond to an integrated luminosity of 138 fb$^{-1}$. [...]
arXiv:2111.10216; CMS-B2G-20-010; CERN-EP-2021-223; CMS-B2G-20-010-003.- Geneva : CERN, 2022-04-08 - 38 p. - Published in : JHEP 2204 (2022) 048 Fulltext: Article from SCOAP3 - PDF; 2111.10216 - PDF; fermilab-pub-21-641-cms - PDF; CMS-B2G-20-010-arXiv - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server

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