New developments in vertex reconstruction for CMS
Presently, two kinds of least-squares (LS) vertex fits are implemented in the ORCA reconstruction program (http://cmsdoc.cern.ch/orca) of the CMS experiment (http://cmsinfo.cern.ch): a full Kalman filter, and an iterative fit working with the impact points of the tracks with respect to an expansion...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/170959 2023-05-15T17:53:26+02:00 New developments in vertex reconstruction for CMS Frühwirth, Rudolf Prokofiev, K. Speer, Thomas Vanlaer, Pascal Waltenberger, Wolfgang 2003-04 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/170959 https://dipot.ulb.ac.be/dspace/bitstream/2013/170959/1/Elsevier_154589.pdf en eng uri/info:doi/10.1016/S0168-9002(03)00548-5 uri/info:pii/S0168900203005485 uri/info:scp/0038218488 https://dipot.ulb.ac.be/dspace/bitstream/2013/170959/1/Elsevier_154589.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/170959 1 full-text file(s): info:eu-repo/semantics/restrictedAccess Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 502 (2-3 Physique des particules élémentaires Kalman filter Robust estimators Vertex reconstruction info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2003 ftunivbruxelles 2022-06-12T21:04:08Z Presently, two kinds of least-squares (LS) vertex fits are implemented in the ORCA reconstruction program (http://cmsdoc.cern.ch/orca) of the CMS experiment (http://cmsinfo.cern.ch): a full Kalman filter, and an iterative fit working with the impact points of the tracks with respect to an expansion point. In this contribution we concentrate on nonlinear, robust estimators which are insensitive to outlying observations. The aim is to improve the recognition of outliers, to lower the bias in the final fit, and to achieve a better separation between primary vertices and secondary vertices. Robust vertex estimates should also be good starting points for more complex algorithms, such as a multivertex fit. © 2003 Elsevier Science B.V. All rights reserved. SCOPUS: cp.j info:eu-repo/semantics/published Article in Journal/Newspaper Orca DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
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Open Polar |
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DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Physique des particules élémentaires Kalman filter Robust estimators Vertex reconstruction |
spellingShingle |
Physique des particules élémentaires Kalman filter Robust estimators Vertex reconstruction Frühwirth, Rudolf Prokofiev, K. Speer, Thomas Vanlaer, Pascal Waltenberger, Wolfgang New developments in vertex reconstruction for CMS |
topic_facet |
Physique des particules élémentaires Kalman filter Robust estimators Vertex reconstruction |
description |
Presently, two kinds of least-squares (LS) vertex fits are implemented in the ORCA reconstruction program (http://cmsdoc.cern.ch/orca) of the CMS experiment (http://cmsinfo.cern.ch): a full Kalman filter, and an iterative fit working with the impact points of the tracks with respect to an expansion point. In this contribution we concentrate on nonlinear, robust estimators which are insensitive to outlying observations. The aim is to improve the recognition of outliers, to lower the bias in the final fit, and to achieve a better separation between primary vertices and secondary vertices. Robust vertex estimates should also be good starting points for more complex algorithms, such as a multivertex fit. © 2003 Elsevier Science B.V. All rights reserved. SCOPUS: cp.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Frühwirth, Rudolf Prokofiev, K. Speer, Thomas Vanlaer, Pascal Waltenberger, Wolfgang |
author_facet |
Frühwirth, Rudolf Prokofiev, K. Speer, Thomas Vanlaer, Pascal Waltenberger, Wolfgang |
author_sort |
Frühwirth, Rudolf |
title |
New developments in vertex reconstruction for CMS |
title_short |
New developments in vertex reconstruction for CMS |
title_full |
New developments in vertex reconstruction for CMS |
title_fullStr |
New developments in vertex reconstruction for CMS |
title_full_unstemmed |
New developments in vertex reconstruction for CMS |
title_sort |
new developments in vertex reconstruction for cms |
publishDate |
2003 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/170959 https://dipot.ulb.ac.be/dspace/bitstream/2013/170959/1/Elsevier_154589.pdf |
genre |
Orca |
genre_facet |
Orca |
op_source |
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 502 (2-3 |
op_relation |
uri/info:doi/10.1016/S0168-9002(03)00548-5 uri/info:pii/S0168900203005485 uri/info:scp/0038218488 https://dipot.ulb.ac.be/dspace/bitstream/2013/170959/1/Elsevier_154589.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/170959 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1766161148046999552 |