| CMS Note | |
| Report number | CMS-NOTE-2006-039 |
| Title | Use of $Z \rightarrow e^+ e^-$ events for ECAL calibration |
| Author(s) | Meridiani, Paolo ; Paramatti, Riccardo |
| Submitted by | 27 Jan 2006 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Free keywords | PRS |
| Abstract | 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. |
| Copyright/License | Preprint: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Record created 2006-03-10, last modified 2018-06-14
