CERN Accelerating science

CERN Document Server 1,571 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.69 sekúnd. 
1.
Measurement of the fractional radiation length of a pixel module for the CMS Phase-2 upgrade via the multiple scattering of positrons / Tracker Group of the CMS Collaboration
High-luminosity particle collider experiments such as the ones planned at the High-Luminosity Large Hadron Collider require ever-greater vertexing precision of the tracking detectors, necessitating also reductions in the material budget of the detectors. Traditionally, the fractional radiation length ($x/X_0$) of detectors is either estimated using known properties of the constituent materials, or measured in dedicated runs of the final detector. [...]
arXiv:2407.13721; CERN-CMS-NOTE-2024-005.- Geneva : CERN, 2024-10-16 - 42 p. - Published in : JINST 19 (2024) P10023 Fulltext: cc31400e03af7929e4432fc48d857519 - PDF; NOTE2024_005 - PDF; 2407.13721 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
2.
Combination of measurements of the top quark mass from data collected by the ATLAS and CMS experiments at $\sqrt{s}=7$ and 8 TeV / ATLAS Collaboration
A combination of fifteen top quark mass measurements performed by the ATLAS and CMS experiments at the LHC is presented. The data sets used correspond to an integrated luminosity of up to 5 and 20$^{-1}$ of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, respectively. [...]
arXiv:2402.08713; CMS-TOP-22-001; ATLAS-TOPQ-2019-13; CERN-EP-2024-020.- 2024-06-27 - 37 p. - Published in : Phys. Rev. Lett. 132 (2024) 261902 Fulltext: 2402.08713 - PDF; 6937cc72640d896305c353aa4c9dc646 - PDF; Fulltext from Publisher: PDF; External links: Physics Synopsis; Fermilab Library Server
3.
Search for the non-resonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the $b\bar{b}\tau^+\tau^-$ final state in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for the non-resonant production of Higgs boson pairs in the $HH\rightarrow b\bar{b}\tau^+\tau^-$ channel is performed using 140 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of $13$ TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. The analysis strategy is optimised to probe anomalous values of the Higgs boson self-coupling modifier $\kappa_\lambda$ and of the quartic $HHVV$ ($V = W,Z$) coupling modifier $\kappa_{2V}$. [...]
arXiv:2404.12660; CERN-EP-2024-091.- Geneva : CERN, 2024-08-01 - 35 p. - Published in : Phys. Rev. D 110 (2024) 032012 Fulltext: 2404.12660 - PDF; Publication - PDF; External link: Previous draft version
4.
Beam Test Performance Studies of CMS Phase-2 Outer Tracker Module Prototypes / Tracker Group of the CMS Collaboration
A new tracking detector will be installed as part of the Phase-2 upgrade of the CMS detector for the high-luminosity LHC era. This tracking detector includes the Inner Tracker, equipped with silicon pixel sensor modules, and the Outer Tracker, consisting of modules with two parallel stacked silicon sensors. [...]
arXiv:2404.08794.- 2024-10-30 - 40 p. - Published in : JINST 19 (2024) P10032 Fulltext: PDF; Fulltext from Publisher: PDF;
5.
Test beam results of the fiber-sampling dual-readout calorimeter / Giaz, A (INFN, Milan ; Insubria U., Varese) ; Santoro, R (INFN, Milan ; Insubria U., Varese) ; Ampilogov, N (INFN, Milan ; Insubria U., Varese) ; Caccia, M (INFN, Milan ; Insubria U., Varese) ; Chmill, V (Boskovic Inst., Zagreb) ; Cometti, S (INFN, Milan ; Insubria U., Varese) ; Ferrari, R (INFN, Pavia) ; Gaudio, G (INFN, Pavia) ; Giacomelli, P (INFN, Bologna) ; Karadzhinova Ferrer, A (Boskovic Inst., Zagreb) et al.
The dual-readout calorimetric technique reconstructs the event-by-event electromagnetic fraction of the hadronic shower through the simultaneous measurement of scintillating (S) and Cherenkov (C) light produced by the shower development. The new generation of prototypes, based on Silicon Photomultipliers (SiPMs) readout, adds unprecedented granularity to the well-known high-energy resolution. [...]
2022

In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, Italy, 22 - 28 May 2022, pp.167964
6.
Exposing a fibre-based dual-readout calorimeter to a positron beam / Ampilogov, N. (Bergamo U. ; INFN, Milan) ; Cometti, S. (Bergamo U. ; INFN, Milan) ; Agarwala, J. (INFN, Pavia ; Pavia U.) ; Chmill, V. (Boskovic Inst., Zagreb) ; Ferrari, R. (INFN, Pavia) ; Gaudio, G. (INFN, Pavia) ; Giacomelli, P. (INFN, Bologna ; Bologna U.) ; Giaz, A. (Insubria U., Como ; INFN, Milan) ; Karadzhinova-Ferrer, A. (Boskovic Inst., Zagreb) ; Loeschcke-Centeno, A. (Sussex U.) et al.
A prototype of a dual-readout calorimeter using brass capillary tubes surrounding scintillating and clear plastic optical fibres was tested using beams of particles with energies between 10 and 100 GeV produced by the CERN SPS. The scope of the test was to characterise the performance of the tube-based detector response to positrons in terms of linearity, energy resolution, and lateral granularity. [...]
arXiv:2305.09649.- 2023-09-14 - 23 p. - Published in : JINST 18 (2023) P09021 Fulltext: document - PDF; 2305.09649 - PDF;
7.
Evaluation of planar silicon pixel sensors with the RD53A readout chip for the Phase-2 Upgrade of the CMS Inner Tracker / CMS Collaboration
The Large Hadron Collider (LHC) at CERN will undergo an upgrade in order to increase its luminosity to $7.5 \times 10^{34}$ cm$^{-2}$s$^{-1}$. The increased luminosity during this High-Luminosity running phase\\ (HL-LHC), starting around 2029, means a higher rate of proton-proton interactions, hence a larger ionizing dose and particle fluence for the detectors. The current tracking system of the CMS experiment will be fully replaced in order to cope with the new operating conditions. [...]
arXiv:2307.01580; CERN-CMS-NOTE-2023-005.- Geneva : CERN, 2023-11-17 - 29 p. - Published in : JINST 18 (2023) P11015 Fulltext: dc1e9cca1e7c6f6dae97cbda67121cb1 - PDF; 2307.01580 - PDF; NOTE2023_005 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
8.
Search for quantum black hole production in lepton+jet final states using proton--proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector / ATLAS Collaboration
A search for quantum black holes in electron+jet and muon+jet invariant mass spectra is performed with 140 $fb^{-1}$ of data collected by the ATLAS detector in proton--proton collisions at $\sqrt{s}$ = 13 TeV at the Large Hadron Collider. The observed invariant mass spectrum of lepton+jet pairs is consistent with Standard Model expectations. [...]
arXiv:2307.14967; CERN-EP-2023-117.- Geneva : CERN, 2024-02-01 - 28 p. - Published in : 10.1103/PhysRevD.109.032010 Fulltext: EXOT-2018-14-002 - PDF; 2307.14967 - PDF; External link: Previous draft version
9.
Evaluation of HPK $n^+$-$p$ planar pixel sensors for the CMS Phase-2 upgrade / Tracker Group of the CMS Collaboration
To cope with the challenging environment of the planned high luminosity upgrade of the Large Hadron Collider (HL-LHC), scheduled to start operation in 2029, CMS will replace its entire tracking system. The requirements for the tracker are largely determined by the long operation time of 10~years with an instantaneous peak luminosity of up to $7.5\times 10^{34}$~cm$^{-2}$s$^{-1}$ in the ultimate performance scenario. Depending on the radial distance from the interaction point, the silicon sensors will receive a particle fluence corresponding to a non-ionizing energy loss of up to $\Phi_{\text{eq}} = 3.5\times 10^{16}$~cm$^{-2}$. [...]
arXiv:2212.04793; CMS-NOTE-2023-002.- Geneva : CERN, 2023-05-09 - 18 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1053 (2023) 168326 Fulltext: NOTE2023_002 - PDF; 2212.04793 - PDF; 826201a370cac8eb0cb4bd0a37aa14d9 - PDF; External link: Fermilab Library Server
10.
Search for third-generation vector-like leptons in $pp$ collisions at $\sqrt{s} = 13\,\text{TeV}$ with the ATLAS detector / ATLAS Collaboration
A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic $\tau$-lepton decays is presented. The search is performed using a dataset of proton$-$proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139 fb$^{-1}$. [...]
arXiv:2303.05441; CERN-EP-2022-236.- Geneva : CERN, 2023-07-13 - 48 p. - Published in : JHEP 2307 (2023) 118 Fulltext: 2303.05441 - PDF; document - PDF; External link: Previous draft version

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