The factorization bias in the Van der Meer method: Run 2 experiences at the CMS experiment
| Autor: | Knolle, Joscha, CMS Collaboration |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
p p: scattering
CERN Lab Physics::Instrumentation and Detectors FOS: Physical sciences density [p] monitoring [luminosity] p: density luminosity: monitoring High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) factorization scattering [p p] Detectors and Experimental Techniques Nuclear Experiment talk: Prevessin 2019/06/04 Prevessin 2019/06/04 [talk] CMS hep-ex food and beverages calibration transverse CERN LHC Coll Physics::Accelerator Physics colliding beams [p p] p p: colliding beams Particle Physics - Experiment experimental results |
| Zdroj: | LHC Lumi Days 2019, Prevessin, France, 2019-06-04-2019-06-05 Joscha Knolle |
| DOI: | 10.3204/PUBDB-2019-05285 |
| Popis: | The luminosity measurement of the CMS experiment at the CERN LHC is calibrated with Van der Meer (VdM) scans. A bias occurs in the VdM method due to the assumption of transversely factorizable proton densities of the LHC beams. Here, the different methods applied in Run 2 to estimate the size of the factorization bias are reported. The beam-imaging method reconstructs the transverse proton densities from beam-imaging scans. Additional methods exploit offset scans, analyze the evolution of the measured luminous region, and evaluate diagonal scans. Presented at the LHC Lumi Days 2019, Pr\'evessin, France, June 04-05, 2019 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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