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...
Published in: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
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ftunivsthongkong:oai:repository.ust.hk:1783.1-70367 2023-05-15T17:53:25+02:00 New developments in vertex reconstruction for CMS Prokofiev, Kirill 2003 http://repository.ust.hk/ir/Record/1783.1-70367 https://doi.org/10.1016/S0168-9002(03)00548-5 http://www.scopus.com/record/display.url?eid=2-s2.0-0038218488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000182893400113 English eng http://repository.ust.hk/ir/Record/1783.1-70367 Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment; ACAT 2002; Moscow; Russian Federation, v. 502, (2-3), 2003, April, p. 699-701 0168-9002 https://doi.org/10.1016/S0168-9002(03)00548-5 http://www.scopus.com/record/display.url?eid=2-s2.0-0038218488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000182893400113 Kalman filter Robust estimators Vertex reconstruction Article 2003 ftunivsthongkong https://doi.org/10.1016/S0168-9002(03)00548-5 2021-04-30T00:02:44Z 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. Article in Journal/Newspaper Orca The Hong Kong University of Science and Technology: HKUST Institutional Repository Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 502 2-3 699 701 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
topic |
Kalman filter Robust estimators Vertex reconstruction |
spellingShingle |
Kalman filter Robust estimators Vertex reconstruction Prokofiev, Kirill New developments in vertex reconstruction for CMS |
topic_facet |
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. |
format |
Article in Journal/Newspaper |
author |
Prokofiev, Kirill |
author_facet |
Prokofiev, Kirill |
author_sort |
Prokofiev, Kirill |
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://repository.ust.hk/ir/Record/1783.1-70367 https://doi.org/10.1016/S0168-9002(03)00548-5 http://www.scopus.com/record/display.url?eid=2-s2.0-0038218488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000182893400113 |
genre |
Orca |
genre_facet |
Orca |
op_relation |
http://repository.ust.hk/ir/Record/1783.1-70367 Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment; ACAT 2002; Moscow; Russian Federation, v. 502, (2-3), 2003, April, p. 699-701 0168-9002 https://doi.org/10.1016/S0168-9002(03)00548-5 http://www.scopus.com/record/display.url?eid=2-s2.0-0038218488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000182893400113 |
op_doi |
https://doi.org/10.1016/S0168-9002(03)00548-5 |
container_title |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
container_volume |
502 |
container_issue |
2-3 |
container_start_page |
699 |
op_container_end_page |
701 |
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1766161136349085696 |