The LHCb trigger and its performance in 2011
This paper presents the design of the LHCb trigger and its performance on data taken at the LHC in 2011. A principal goal of LHCb is to perform flavour physics measurements, and the trigger is designed to distinguish charm and beauty decays from the light quark background. Using a combination of lep...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
April 22, 2013
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| In: |
Journal of Instrumentation
Year: 2013, Jahrgang: 8, Pages: 1-22 |
| ISSN: | 1748-0221 |
| DOI: | 10.1088/1748-0221/8/04/P04022 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1748-0221/8/04/P04022
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| Verfasserangaben: | R. Aaij, G. Krocker, S. Stahl, und weitere 80 |
| Zusammenfassung: | This paper presents the design of the LHCb trigger and its performance on data taken at the LHC in 2011. A principal goal of LHCb is to perform flavour physics measurements, and the trigger is designed to distinguish charm and beauty decays from the light quark background. Using a combination of lepton identification and measurements of the particles' transverse momenta the trigger selects particles originating from charm and beauty hadrons, which typically fly a finite distance before decaying. The trigger reduces the roughly 11 MHz of bunch-bunch crossings that contain at least one inelastic pp interaction to 3 kHz. This reduction takes place in two stages; the first stage is implemented in hardware and the second stage is a software application that runs on a large computer farm. A data-driven method is used to evaluate the performance of the trigger on several charm and beauty decay modes. |
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| Beschreibung: | Gesehen am 23.04.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1748-0221 |
| DOI: | 10.1088/1748-0221/8/04/P04022 |