A neural network clustering algorithm for the ATLAS silicon pixel detector
A novel technique to identify and split clusters created by multiple charged particles in the ATLAS pixel detector using a set of artificial neural networks is presented. Such merged clusters are a common feature of tracks originating from highly energetic objects, such as jets. Neural networks are...
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Autores principales: | , , , , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
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2014
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85038 |
Aporte de: |
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I19-R120-10915-85038 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Física Particle tracking detectors Particle tracking detectors (solid-state detectors) |
spellingShingle |
Física Particle tracking detectors Particle tracking detectors (solid-state detectors) Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo A neural network clustering algorithm for the ATLAS silicon pixel detector |
topic_facet |
Física Particle tracking detectors Particle tracking detectors (solid-state detectors) |
description |
A novel technique to identify and split clusters created by multiple charged particles in the ATLAS pixel detector using a set of artificial neural networks is presented. Such merged clusters are a common feature of tracks originating from highly energetic objects, such as jets. Neural networks are trained using Monte Carlo samples produced with a detailed detector simulation. This technique replaces the former clustering approach based on a connected component analysis and charge interpolation. The performance of the neural network splitting technique is quantified using data from proton-proton collisions at the LHC collected by the ATLAS detector in 2011 and from Monte Carlo simulations. This technique reduces the number of clusters shared between tracks in highly energetic jets by up to a factor of three. It also provides more precise position and error estimates of the clusters in both the transverse and longitudinal impact parameter resolution. |
format |
Articulo Articulo |
author |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo |
author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo |
author_sort |
Alconada Verzini, María Josefina |
title |
A neural network clustering algorithm for the ATLAS silicon pixel detector |
title_short |
A neural network clustering algorithm for the ATLAS silicon pixel detector |
title_full |
A neural network clustering algorithm for the ATLAS silicon pixel detector |
title_fullStr |
A neural network clustering algorithm for the ATLAS silicon pixel detector |
title_full_unstemmed |
A neural network clustering algorithm for the ATLAS silicon pixel detector |
title_sort |
neural network clustering algorithm for the atlas silicon pixel detector |
publishDate |
2014 |
url |
http://sedici.unlp.edu.ar/handle/10915/85038 |
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Repositorios |
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