CERN Accelerating science

CERN Document Server 518,713 záznamov nájdených  začiatokpredošlý1076 - 1085ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.83 sekúnd. 
1076.
Z counting in 2024 /CMS Collaboration
$Z\to\ell\ell$ yields provide a physics-based cross-check of online luminosity. Fill-level and yearly trends of $Z/\text{online}$ remain stable at the percent level while reflecting updates to online calibrations (vdM/efficiency), validating the delivered luminosity scale independently of luminometer-specific assumptions..
CMS-DP-2025-065; CERN-CMS-DP-2025-065.- Geneva : CERN, 2025 - 4 p. Fulltext: PDF;
1077.
Emittance Scans in 2024 /CMS Collaboration
Routine emittance scans in physics fills probe linearity/stability across changing 2024 beam conditions. From scan fits (often preferring q-Gaussian/Double Gaussian over Single Gaussian with limited points), we derive $\sigma_{\mathrm{vis}}^{\mathrm{emitt}}$ and track efficiency trends versus delivered dose $\int \mathcal{L}\,dt$. [...]
CMS-DP-2025-064; CERN-CMS-DP-2025-064.- Geneva : CERN, 2025 - 16 p. Fulltext: PDF;
1078.
Reprocessing and integration results for luminosity measurement /CMS Collaboration
We detail the reprocessing used to deliver physics-quality luminosity from multiple luminometers: apply nonlinearity and stability corrections (e.g. $m=\ell(1+\alpha\ell)$), veto anomalies, and combine detectors consistently. [...]
CMS-DP-2025-063; CERN-CMS-DP-2025-063.- Geneva : CERN, 2025 - 18 p. Fulltext: PDF;
1079.
Luminosity calibration methods for Run 2 and Run 3 proton-proton data /CMS Collaboration
CMS calibrates luminosity in special fills using van der Meer scans, where detector rates satisfy $R(t)=\mathcal{L}(t)\,\sigma$. The visible cross section $\sigma_{\mathrm{vis}}$ is extracted from rate-separation fits, with beam widths $\Sigma_{x,y}$ inferred versus separations $\Delta_{x,y}$. [...]
CMS-DP-2025-062; CERN-CMS-DP-2025-062.- Geneva : CERN, 2025 - 69 p. Fulltext: PDF;
1080.
CMS results on top quark properties / Tsai, Emily Minyun (Northeastern U.) /CMS Collaboration
Top quarks have interesting properties that make them useful as probes of standard model (SM) properties, as well as in searches for new physics. In these proceedings, two recent results from the CMS collaboration on top quark properties are presented. [...]
CMS-CR-2025-183.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 13th Edition of the Large Hadron Collider Physics Conference (LHCP2025), Taipei, Tw, 5 - 9 May 2025
1081.
Strategies and performances of the CMS trigger in Run 3 / Aruta, Caterina (Florida U.) /CMS Collaboration
The Compact Muon Solenoid experiment at the Large Hadron Collider employs a two-level trigger system to select physics events of interest from high-rate collisions. The third operational period of the accelerator, Run 3, which began in 2022, presents new challenges with unprecedented levels of simultaneous collisions in a single bunch crossing (pileup). [...]
CMS-CR-2025-175.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 13th Edition of the Large Hadron Collider Physics Conference (LHCP2025), Taipei, Tw, 5 - 9 May 2025
1082.
Alignment of the CMS Tracker during Run 3 data taking / Chokeprasert, Punnawich (Chulalongkorn U.) /CMS Collaboration
The tracker of the CMS experiment is the largest silicon tracker ever built. It is highly granular with 1856 pixel and 15\,148 strip detector modules that provide accurate track reconstruction. [...]
CMS-CR-2025-149.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 13th Edition of the Large Hadron Collider Physics Conference (LHCP2025), Taipei, Tw, 5 - 9 May 2025
1083.
Study of the $^{50}$Cr(n,p)$^{50}$V Reaction at n_TOF for Advanced Fusion Technologies / Foteinou, Varvara (University of Ioannina, Greece) ; Amaducci, Simone (INFN Laboratori Nazionali del Sud, Catania, Italy) ; Goula, Styliani (University of Ioannina, Greece & European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland) ; Bacak, Michael (Vienna University of Technology (AT), Vienna, Austria) ; Claps, Gerardo (Agenzia nazionale per le nuove tecnologie (ENEA), Italy & INFN Laboratori Nazionali Frascati, Frascati, Italy) ; Colonna, Nicola (INFN, Sezione di Bari, Bari, Italy) ; Cosentino, Luigi (INFN Laboratori Nazionali del Sud, Catania, Italy) ; Diakaki, Maria (National Technical University of Athens, Athens, Greece) ; Eleme, Zinovia (University of Ioannina, Greece) ; Finocchiaro, Paolo (INFN Laboratori Nazionali del Sud, Catania, Italy) et al.
CERN-INTC-2025-043 ; INTC-P-747.
- 2025 - mult..
Full text
1084.
Readout of the FPGA-based Global Trigger system of the ATLAS experiment / Xu, Tong (Argonne National Laboratory (US)) /ATLAS Collaboration
A new FPGA-based Global Trigger system is intended for the Phase-II Upgrade of the ATLAS experiment at the High-Luminosity Large Hadron Collider (HL-LHC). The system will process data from the experiment with fixed latency to allow the selection of individual collisions of proton bunches with physical potential. [...]
ATL-DAQ-SLIDE-2025-521.- Geneva : CERN, 2025 - 16 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 20th International Conference on Accelerator and Large Experimental Physics Control Systems, Chicago, Us, 20 - 26 Sep 2025
1085.
Measurement of the quadruple-differential angular decay rates of single top quarks produced with the ATLAS detector / Khan, Raees Ahmad (University of Pittsburgh (US)) ; Boudreau, Joseph (University of Pittsburgh (US)) ; Cai, Huacheng (CERN) ; Mueller, James Alfred (University of Pittsburgh (US)) ; Chitishvili, Mariam (Univ. of Valencia and CSIC (ES)) ; Escobar Ibanez, Carlos (Univ. of Valencia and CSIC (ES)) ; Degens, Jordy (University of Liverpool (GB)) ; Ng, Chi Wing (University of Pittsburgh (US)) ; Vreeswijk, Marcel (Nikhef National institute for subatomic physics (NL)) ; Costa Mezquita, Maria Jose (Univ. of Valencia and CSIC (ES)) /ATLAS Collaboration
In this study, we measure the fourfold differential angular decay rate of single top quarks produced in the t-channel in proton-proton collisions, using the full LHC Run 2 dataset collected by the ATLAS detector, with a centre-of-mass energy of sqrt{s}=13 TeV. Our primary goal is to extract limits on the Wilson coefficients at the tWb vertex and the four-quark operator C_{Qq} at the production vertex, alongside measuring the t-channel single top quark production cross-section. [...]
ATL-PHYS-SLIDE-2025-520.- Geneva : CERN, 2025 - 1 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)

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