Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb

B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* are suitable control channels for the calibration of flavour tagging for CP measurements in Bs ->J/psi(mm) phi and B0 ->J/psi(mm)KS channels; in the first case if opposite side tagging only is considered. In this note we describe the calibration of...

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Detalles Bibliográficos
Autores principales: Calvi, M, Lanfranchi, G, Leroy, O, Musy, M, Poss, S, Vecchi, S
Lenguaje:eng
Publicado: 2009
Materias:
Physics in General
Acceso en línea:http://cds.cern.ch/record/1162605
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author Calvi, M
Lanfranchi, G
Leroy, O
Musy, M
Poss, S
Vecchi, S
author_facet Calvi, M
Lanfranchi, G
Leroy, O
Musy, M
Poss, S
Vecchi, S
author_sort Calvi, M
collection CERN
description B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* are suitable control channels for the calibration of flavour tagging for CP measurements in Bs ->J/psi(mm) phi and B0 ->J/psi(mm)KS channels; in the first case if opposite side tagging only is considered. In this note we describe the calibration of the probability of mistag performed with B+ ->J/psi(mm)K+ events and the measurement of the mistag performed with B0 ->J/psi(mm)K* events in a fit to flavour oscillation as a function of proper time. Models are developed to extract this information from selected events taking into account different background components. An expected statistical sensitivity on the average opposite side mistag rate sigma(wOS)/ wOS = 0.3 % is obtained for B0 ->J/psi(mm)K* events, in 2 fb-1 of data.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
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spelling cern-11626052019-09-30T06:29:59Zhttp://cds.cern.ch/record/1162605engCalvi, MLanfranchi, GLeroy, OMusy, MPoss, SVecchi, SCalibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCbPhysics in GeneralB+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* are suitable control channels for the calibration of flavour tagging for CP measurements in Bs ->J/psi(mm) phi and B0 ->J/psi(mm)KS channels; in the first case if opposite side tagging only is considered. In this note we describe the calibration of the probability of mistag performed with B+ ->J/psi(mm)K+ events and the measurement of the mistag performed with B0 ->J/psi(mm)K* events in a fit to flavour oscillation as a function of proper time. Models are developed to extract this information from selected events taking into account different background components. An expected statistical sensitivity on the average opposite side mistag rate sigma(wOS)/ wOS = 0.3 % is obtained for B0 ->J/psi(mm)K* events, in 2 fb-1 of data.LHCb-2009-020CERN-LHCb-2009-020oai:cds.cern.ch:11626052009-05-08
spellingShingle Physics in General
Calvi, M
Lanfranchi, G
Leroy, O
Musy, M
Poss, S
Vecchi, S
Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb
title Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb
title_full Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb
title_fullStr Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb
title_full_unstemmed Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb
title_short Calibration of flavour tagging with B+ -> J/psi(mm)K+ and B0 ->J/psi(mm)K* control channels at LHCb
title_sort calibration of flavour tagging with b+ -> j/psi(mm)k+ and b0 ->j/psi(mm)k* control channels at lhcb
topic Physics in General
url http://cds.cern.ch/record/1162605
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AT lanfranchig calibrationofflavourtaggingwithbjpsimmkandb0jpsimmkcontrolchannelsatlhcb
AT leroyo calibrationofflavourtaggingwithbjpsimmkandb0jpsimmkcontrolchannelsatlhcb
AT musym calibrationofflavourtaggingwithbjpsimmkandb0jpsimmkcontrolchannelsatlhcb
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