Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration

The Z mass constraint in Z rightarrow e^+e^- events is a powerful tool to inter-calibrate ECAL regions, set the absolute energy scale and, ultimately, tune electron reconstruction algorithms. In this note a strategy to use Z events is proposed and tested with a sample of two millions fully simulated...

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Detalles Bibliográficos
Autores principales: Meridiani, Paolo, Paramatti, Riccardo
Lenguaje:eng
Publicado: 2006
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/934068
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author Meridiani, Paolo
Paramatti, Riccardo
author_facet Meridiani, Paolo
Paramatti, Riccardo
author_sort Meridiani, Paolo
collection CERN
description The Z mass constraint in Z rightarrow e^+e^- events is a powerful tool to inter-calibrate ECAL regions, set the absolute energy scale and, ultimately, tune electron reconstruction algorithms. In this note a strategy to use Z events is proposed and tested with a sample of two millions fully simulated Z rightarrow e^+e^- events; the method avoids the inversion of huge matrices. Calibration results obtained with a sample corresponding to 2 fb^-1 of integrated luminosity are shown. A detailed study on the usage of different electron classes in Z events for calibration purposes is presented.
id cern-934068
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-9340682019-09-30T06:29:59Zhttp://cds.cern.ch/record/934068engMeridiani, PaoloParamatti, RiccardoUse of $Z \rightarrow e^+ e^-$ events for ECAL calibrationDetectors and Experimental TechniquesThe Z mass constraint in Z rightarrow e^+e^- events is a powerful tool to inter-calibrate ECAL regions, set the absolute energy scale and, ultimately, tune electron reconstruction algorithms. In this note a strategy to use Z events is proposed and tested with a sample of two millions fully simulated Z rightarrow e^+e^- events; the method avoids the inversion of huge matrices. Calibration results obtained with a sample corresponding to 2 fb^-1 of integrated luminosity are shown. A detailed study on the usage of different electron classes in Z events for calibration purposes is presented.CMS-NOTE-2006-039oai:cds.cern.ch:9340682006-01-27
spellingShingle Detectors and Experimental Techniques
Meridiani, Paolo
Paramatti, Riccardo
Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration
title Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration
title_full Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration
title_fullStr Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration
title_full_unstemmed Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration
title_short Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration
title_sort use of $z \rightarrow e^+ e^-$ events for ecal calibration
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/934068
work_keys_str_mv AT meridianipaolo useofzrightarroweeeventsforecalcalibration
AT paramattiriccardo useofzrightarroweeeventsforecalcalibration

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