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A tool for $\gamma/\pi^0$ separation at high energies
This note describes a tool developed to distinguish between neutral pions that are reconstructed as a single cluster in the LHCb ECAL and photons. The separation is based on the different shape of electromagnetic clusters produced by these two particles. The tool allows to select high energy photons...
| Autores principales: | , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/2042173 |
| _version_ | 1780947843280797696 |
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| author | Calvo Gomez, Miriam Cogneras, Eric Deschamps, Olivier Hoballah, Mostafa Lefevre, Regis Monteil, Stephane Puig Navarro, Albert Rives Molina, Vicente Jose |
| author_facet | Calvo Gomez, Miriam Cogneras, Eric Deschamps, Olivier Hoballah, Mostafa Lefevre, Regis Monteil, Stephane Puig Navarro, Albert Rives Molina, Vicente Jose |
| author_sort | Calvo Gomez, Miriam |
| collection | CERN |
| description | This note describes a tool developed to distinguish between neutral pions that are reconstructed as a single cluster in the LHCb ECAL and photons. The separation is based on the different shape of electromagnetic clusters produced by these two particles. The tool allows to select high energy photons with 95% efficiency, while rejecting about half of the background from neutral pions. Methods to calibrate the efficiency of the tool in real data and to deal with the different performance in Monte Carlo samples are also presented. |
| id | cern-2042173 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2015 |
| record_format | invenio |
| spelling | cern-20421732019-09-30T06:29:59Zhttp://cds.cern.ch/record/2042173engCalvo Gomez, MiriamCogneras, EricDeschamps, OlivierHoballah, MostafaLefevre, RegisMonteil, StephanePuig Navarro, AlbertRives Molina, Vicente JoseA tool for $\gamma/\pi^0$ separation at high energiesParticle Physics - ExperimentThis note describes a tool developed to distinguish between neutral pions that are reconstructed as a single cluster in the LHCb ECAL and photons. The separation is based on the different shape of electromagnetic clusters produced by these two particles. The tool allows to select high energy photons with 95% efficiency, while rejecting about half of the background from neutral pions. Methods to calibrate the efficiency of the tool in real data and to deal with the different performance in Monte Carlo samples are also presented.LHCb-PUB-2015-016CERN-LHCb-PUB-2015-016oai:cds.cern.ch:20421732015-08-11 |
| spellingShingle | Particle Physics - Experiment Calvo Gomez, Miriam Cogneras, Eric Deschamps, Olivier Hoballah, Mostafa Lefevre, Regis Monteil, Stephane Puig Navarro, Albert Rives Molina, Vicente Jose A tool for $\gamma/\pi^0$ separation at high energies |
| title | A tool for $\gamma/\pi^0$ separation at high energies |
| title_full | A tool for $\gamma/\pi^0$ separation at high energies |
| title_fullStr | A tool for $\gamma/\pi^0$ separation at high energies |
| title_full_unstemmed | A tool for $\gamma/\pi^0$ separation at high energies |
| title_short | A tool for $\gamma/\pi^0$ separation at high energies |
| title_sort | tool for $\gamma/\pi^0$ separation at high energies |
| topic | Particle Physics - Experiment |
| url | http://cds.cern.ch/record/2042173 |
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