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Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run

Aad, G.
•
Abajyan, T.
•
Abbott, B.
altro
GIORDANI, Mario
2013
  • journal article

Periodico
JOURNAL OF INSTRUMENTATION
Abstract
This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag and remove background contaminated events in data. Triggerrate based monitoring of beam-related backgrounds is presented. The correlations of backgrounds with machine conditions, such as residual pressure in the beam-pipe, are discussed. Results from dedicated beam-background simulations are shown, and their qualitative agreement with data is evaluated. Data taken during the passage of unpaired, i.e. non-colliding, proton bunches is used to obtain background-enriched data samples. These are used to identify characteristic features of beam-induced backgrounds, which then are exploited to develop dedicated background tagging tools. These tools, based on observables in the Pixel detector, the muon spectrometer and the calorimeters, are described in detail and their efficiencies are evaluated. Finally an example of an application of these techniques to a monojet analysis is given, which demonstrates the importance of such event cleaning techniques for some new physics searches.
DOI
10.1088/1748-0221/8/07/P07004
WOS
WOS:000322572900015
Archivio
http://hdl.handle.net/11390/1110217
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84971254240
http://iopscience.iop.org/1748-0221/8/07/P07004/pdf/1748-0221_8_07_P07004.pdf
Diritti
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Soggetti
  • Accelerator modelling...

  • Analysis and statisti...

  • Pattern recognition, ...

  • Performance of High E...

  • single-particle dynam...

  • Instrumentation

  • Mathematical Physics

Scopus© citazioni
44
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
54
Data di acquisizione
Mar 20, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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