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

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, suc...

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Detalles Bibliográficos
Autores principales:	Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín Fernando, The ATLAS Collaboration
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2013
Materias:	Física Accelerator modelling and simulations (multi-particle dynamics Analysis and statistical methods Pattern recognition, cluster finding, calibration and fitting methods Performance of High Energy Physics Detectors single-particle dynamics)
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/85342
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-85342
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Accelerator modelling and simulations (multi-particle dynamics Analysis and statistical methods Pattern recognition, cluster finding, calibration and fitting methods Performance of High Energy Physics Detectors single-particle dynamics)
spellingShingle	Física Accelerator modelling and simulations (multi-particle dynamics Analysis and statistical methods Pattern recognition, cluster finding, calibration and fitting methods Performance of High Energy Physics Detectors single-particle dynamics) Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
topic_facet	Física Accelerator modelling and simulations (multi-particle dynamics Analysis and statistical methods Pattern recognition, cluster finding, calibration and fitting methods Performance of High Energy Physics Detectors single-particle dynamics)
description	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.
format	Articulo Articulo
author	Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration
author_facet	Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration
author_sort	Alonso, Francisco
title	Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
title_short	Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
title_full	Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
title_fullStr	Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
title_full_unstemmed	Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
title_sort	characterisation and mitigation of beam-induced backgrounds observed in the atlas detector during the 2011 proton-proton run
publishDate	2013
url	http://sedici.unlp.edu.ar/handle/10915/85342
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Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run

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