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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;

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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;

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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;

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First measurement of the forward rapidity gap distribution in pPb collisions at $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = $ 8.16 TeV / CMS Collaboration
For the first time at LHC energies, the forward rapidity gap spectra from proton-lead collisions for both proton and lead dissociation processes are presented. The analysis is performed over 10.4 units of pseudorapidity at a center-of-mass energy per nucleon pair of $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = $ 8.16 TeV, almost 300 times higher than in previous measurements of diffractive production in proton-nucleus collisions. [...]
arXiv:2301.07630; CMS-HIN-18-019; CERN-EP-2022-164; CMS-HIN-18-019-003.- Geneva : CERN, 2023-11-01 - 25 p. - Published in : Phys. Rev. D 108 (2023) 092004 Fulltext: CMS-HIN-18-019-arXiv - PDF; 2301.07630 - PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList

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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;

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Search for CP violating top quark couplings in pp collisions at $ \sqrt{s} $ = 13 TeV / CMS Collaboration
Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb$^{-1}$. [...]
arXiv:2205.07434; CMS-TOP-18-007; CERN-EP-2021-143; CMS-TOP-18-007-003.- Geneva : CERN, 2023-07-04 - 45 p. - Published in : JHEP 2307 (2023) 023 Fulltext: CMS-TOP-18-007-arXIv - PDF; 2205.07434 - PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList

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Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell-Yan production in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
The double differential cross sections of the Drell-Yan lepton pair ($\ell^{+}\ell^{-}$, dielectron or dimuon) production are measured as functions of the invariant mass ${m_{{\ell} {\ell} }}$, transverse momentum ${p_{\mathrm{T}}}(\ell\ell)$, and ${\varphi^{*}_{\eta}}$. The ${\varphi^{*}_{\eta}}$ observable, derived from angular measurements of the leptons and highly correlated with ${p_{\mathrm{T}}}(\ell\ell)$, is used to probe the low-${p_{\mathrm{T}}}(\ell\ell)$ region in a complementary way. [...]
arXiv:2205.04897; CMS-SMP-20-003; CERN-EP-2022-053.- 2023-07-17 - 47 p. - Published in : Eur. Phys. J. C 83 (2023) 628 Fulltext: CMS-SMP-20-003-arXiv - PDF; 2205.04897 - PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList

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Measurement of differential cross sections for the production of a Z boson in association with jets in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
A measurement is presented of the production of Z bosons that decay into two electrons or muons in association with jets, in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data were recorded by the CMS Collaboration at the LHC with an integrated luminosity of 35.9 fb$^{-1}$. [...]
arXiv:2205.02872; CMS-SMP-19-009; CERN-EP-2021-175.- 2023-09-06 - 37 p. - Published in : Phys. Rev. D 108 (2023) 052004 Fulltext: 2205.02872 - PDF; CMS-SMP-19-009-arXiv - PDF; Publication - PDF; 08425df9d401b17be2529702946971ca - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server

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Azimuthal Correlations within Exclusive Dijets with Large Momentum Transfer in Photon-Lead Collisions / CMS Collaboration
The first measurement of the azimuthal angular correlations of exclusively produced events with two jets in photon-lead interactions at large momentum transfer is presented. Theoretical predictions relate such correlations to the polarization of gluons within nuclei. [...]
arXiv:2205.00045; CMS-HIN-18-011; CERN-EP-2021-071; CMS-HIN-18-011-004.- Geneva : CERN, 2023-08-01 - 10 p. - Published in : Phys. Rev. Lett. 131 (2023) 051901 Fulltext: CMS-HIN-18-011-arXiv - PDF; 2205.00045 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server

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10.

Two-particle azimuthal correlations in $\gamma$p interactions using pPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 8.16 TeV / CMS Collaboration
The first measurements of the Fourier coefficients (${V_{n\Delta}}$) of the azimuthal distributions of charged hadrons emitted from photon-proton ($\gamma$p) interactions are presented. The data are extracted from 68.8 nb$^{-1}$ of ultra-peripheral proton-lead (pPb) collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 8.16 TeV using the CMS detector. [...]
arXiv:2204.13486; CMS-HIN-18-008; CERN-EP-2021-100; CMS-HIN-18-008-004.- Geneva : CERN, 2023-07-20 - 24 p. - Published in : Phys. Lett. B 844 (2023) 137905 Fulltext: 2204.13486 - PDF; CMS-HIN-18-008-arXiv - PDF; Fulltext from Publisher: PDF; External links: Additional information for the analysis; CMS AuthorList

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Vedi anche: autori con nomi simili
3	Keller, H B
2	Keller, H J
19	Keller, H U
9	Keller, H.
1	Keller, Hans Heinrich
1	Keller, Heimo
336	Keller, Henning
1	Keller, Herbert B
3	Keller, Herbert Bishop
1	Keller, Howard
3	Keller, Hugo

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