The KLOE-2 e+ e− tagging for two-photon physics
| Autor: | F. Curciarello |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Luminosity (scattering theory) Calorimeter (particle physics) Physics::Instrumentation and Detectors 010308 nuclear & particles physics Detector Scintillator 01 natural sciences 030218 nuclear medicine & medical imaging Nuclear physics 03 medical and health sciences 0302 clinical medicine 0103 physical sciences Radiative transfer Two-photon physics Physics::Accelerator Physics High Energy Physics::Experiment Instrumentation Mathematical Physics Lepton Bhabha scattering |
| Zdroj: | Journal of Instrumentation. 15:C09016-C09016 |
| ISSN: | 1748-0221 |
| DOI: | 10.1088/1748-0221/15/09/c09016 |
| Popis: | One goal of the KLOE-2 experiment, at the Frascati φ-factory, is to study e+e− → γ*γ*e+e−→ π0 e+e− processes by tagging final state leptons with two scintillator hodoscopes in Roman pots on the DAΦNE beam line. The High Energy Tagger (HET) counting rate is dominated by radiative Bhabha scattering events without any associated signal in the KLOE detector. By comparison with the KLOE luminosity measurement, the radiative Bhabha cross section per scintillator can be measured, in order to monitor detector performance and infer acceptance × efficiency of the HET. The π0 production from two-photon fusion is tagged by requiring the coincidence between the HET and the KLOE detectors when two clusters in the KLOE calorimeter are associated to the same bunch crossing in DAΦNE. HET performance, data stability studies, very low angle radiative Bhabha cross section measurement, and updates on γ*γ*→ π0 search are presented. |
| Databáze: | OpenAIRE |
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