A kinematical constrained fit using the Lagrange multipliers method

The bundling of tracks taking into account the kinematical constraint given by the invariant mass of the mother particle and the geometrical ones of having a common point in space, is a problem which involves finding the extrema of a multivariate function subjected to a certain set of analytical con...

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Detalles Bibliográficos
Autor principal: Saborido, J
Lenguaje:eng
Publicado: 1998
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/691725
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author Saborido, J
author_facet Saborido, J
author_sort Saborido, J
collection CERN
description The bundling of tracks taking into account the kinematical constraint given by the invariant mass of the mother particle and the geometrical ones of having a common point in space, is a problem which involves finding the extrema of a multivariate function subjected to a certain set of analytical constraints. In the present note I will describe in detail an algorithm, based on the Lagrange multipliers method, to perform this kind of fit. This algorithm was implemented in a set of Fortran routines to be used in the context of the LHCb analysis library. This implementation is also briefly discussed. Finally, a brief note on the K0s reconstruction is given.1
id cern-691725
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-6917252019-09-30T06:29:59Zhttp://cds.cern.ch/record/691725engSaborido, JA kinematical constrained fit using the Lagrange multipliers methodDetectors and Experimental TechniquesThe bundling of tracks taking into account the kinematical constraint given by the invariant mass of the mother particle and the geometrical ones of having a common point in space, is a problem which involves finding the extrema of a multivariate function subjected to a certain set of analytical constraints. In the present note I will describe in detail an algorithm, based on the Lagrange multipliers method, to perform this kind of fit. This algorithm was implemented in a set of Fortran routines to be used in the context of the LHCb analysis library. This implementation is also briefly discussed. Finally, a brief note on the K0s reconstruction is given.1LHCb-98-051oai:cds.cern.ch:6917251998-05-26
spellingShingle Detectors and Experimental Techniques
Saborido, J
A kinematical constrained fit using the Lagrange multipliers method
title A kinematical constrained fit using the Lagrange multipliers method
title_full A kinematical constrained fit using the Lagrange multipliers method
title_fullStr A kinematical constrained fit using the Lagrange multipliers method
title_full_unstemmed A kinematical constrained fit using the Lagrange multipliers method
title_short A kinematical constrained fit using the Lagrange multipliers method
title_sort kinematical constrained fit using the lagrange multipliers method
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/691725
work_keys_str_mv AT saboridoj akinematicalconstrainedfitusingthelagrangemultipliersmethod
AT saboridoj kinematicalconstrainedfitusingthelagrangemultipliersmethod

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