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Short track reconstruction with VELO and TT

This note describes an algorithm for the reconstruction of tracks which pass through the VELO and TT stations but do not reach the T stations. The algorithm first collects all track segments which are found by the VELO tracking algorithm and are not assigned to any long track. For each VELO segment,...

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Detalles Bibliográficos
Autor principal: Xie, Y
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:http://cds.cern.ch/record/684462
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author Xie, Y
author_facet Xie, Y
author_sort Xie, Y
collection CERN
description This note describes an algorithm for the reconstruction of tracks which pass through the VELO and TT stations but do not reach the T stations. The algorithm first collects all track segments which are found by the VELO tracking algorithm and are not assigned to any long track. For each VELO segment, a combination of TT hits consistent with an extrapolation of the segment is searched for and at least three TT hits are required for a successful match. The VELO segment and the matched TT hits are used to form an upstream track whose trajectory is refitted with a Kalman Filter fit. The performance of the algorithm is checked. An efficiency of about 75% for tracks with p > 1GeV is obtained for the re-optimized LHCb detector, with a corresponding ghost rate of ~15% and momentum resolution of ~ 15%.
id cern-684462
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-6844622019-09-30T06:29:59Zhttp://cds.cern.ch/record/684462engXie, YShort track reconstruction with VELO and TTDetectors and Experimental TechniquesThis note describes an algorithm for the reconstruction of tracks which pass through the VELO and TT stations but do not reach the T stations. The algorithm first collects all track segments which are found by the VELO tracking algorithm and are not assigned to any long track. For each VELO segment, a combination of TT hits consistent with an extrapolation of the segment is searched for and at least three TT hits are required for a successful match. The VELO segment and the matched TT hits are used to form an upstream track whose trajectory is refitted with a Kalman Filter fit. The performance of the algorithm is checked. An efficiency of about 75% for tracks with p > 1GeV is obtained for the re-optimized LHCb detector, with a corresponding ghost rate of ~15% and momentum resolution of ~ 15%.LHCb-2003-100oai:cds.cern.ch:6844622003-08-21
spellingShingle Detectors and Experimental Techniques
Xie, Y
Short track reconstruction with VELO and TT
title Short track reconstruction with VELO and TT
title_full Short track reconstruction with VELO and TT
title_fullStr Short track reconstruction with VELO and TT
title_full_unstemmed Short track reconstruction with VELO and TT
title_short Short track reconstruction with VELO and TT
title_sort short track reconstruction with velo and tt
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/684462
work_keys_str_mv AT xiey shorttrackreconstructionwithveloandtt