Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay

We demonstrate that a measurement of the impact parameter in one-prong tau decay can be useful for the determination of the Higgs boson parity in the H/A --> tau tau; tau --> rho nu decay chain. We have estimated that for a detection set-up such as TESLA, use of the information from the tau im...

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Detalles Bibliográficos
Autores principales: Desch, K., Was, Z., Worek, M.
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1140/epjc/s2003-01231-4
http://cds.cern.ch/record/604141
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author Desch, K.
Was, Z.
Worek, M.
author_facet Desch, K.
Was, Z.
Worek, M.
author_sort Desch, K.
collection CERN
description We demonstrate that a measurement of the impact parameter in one-prong tau decay can be useful for the determination of the Higgs boson parity in the H/A --> tau tau; tau --> rho nu decay chain. We have estimated that for a detection set-up such as TESLA, use of the information from the tau impact parameter can improve the significance of the measurement of the parity of the Standard Model 120 GeV Higgs boson to 4.5 sigma, and in general by factor of about 1.5 with respect to the method where this information is not used. We also show that the variation in the assumption on the precision of the measurement of the impact parameter and/or pi's momenta does not affect the sensitivity of the method. This is because the method remains limited by the type of twofold ambiguity in reconstructing the tau momentum.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6041412023-03-14T18:09:44Zdoi:10.1140/epjc/s2003-01231-4http://cds.cern.ch/record/604141engDesch, K.Was, Z.Worek, M.Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decayParticle Physics - PhenomenologyWe demonstrate that a measurement of the impact parameter in one-prong tau decay can be useful for the determination of the Higgs boson parity in the H/A --> tau tau; tau --> rho nu decay chain. We have estimated that for a detection set-up such as TESLA, use of the information from the tau impact parameter can improve the significance of the measurement of the parity of the Standard Model 120 GeV Higgs boson to 4.5 sigma, and in general by factor of about 1.5 with respect to the method where this information is not used. We also show that the variation in the assumption on the precision of the measurement of the impact parameter and/or pi's momenta does not affect the sensitivity of the method. This is because the method remains limited by the type of twofold ambiguity in reconstructing the tau momentum.We demonstrate that a measurement of the impact parameter in one-prong tau decay can be useful for the determination of the Higgs boson parity in the H/A --> tau tau: tau --> rho nu decay chain. We have estimated that for a detection set-up such as TESLA, use of the information from the tau impact parameter can improve the significance of the measurement of the parity of the Standard Model 120 GeV Higgs boson to 4.5 sigma, and in general by factor of about 1.5 with respect to the method where this information is not used. We also show that the variation in the assumption on the precision of the measurement of the impact parameter and/or pi's momenta does not affect the sensitivity of the method. This is because the method remains limited by the type of twofold ambiguity in reconstructing the tau momentum.hep-ph/0302046LC-PHSM-2003-003CERN-TH-2003-009TTP-03-01CERN-TH-2003-009LC-PHSM-2003-003TTP-2003-01oai:cds.cern.ch:6041412003-02-06
spellingShingle Particle Physics - Phenomenology
Desch, K.
Was, Z.
Worek, M.
Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay
title Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay
title_full Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay
title_fullStr Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay
title_full_unstemmed Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay
title_short Measuring the Higgs boson parity at a Linear Collider using the tau impact parameter and $\tau \to \rho \nu$ decay
title_sort measuring the higgs boson parity at a linear collider using the tau impact parameter and $\tau \to \rho \nu$ decay
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1140/epjc/s2003-01231-4
http://cds.cern.ch/record/604141
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AT wasz measuringthehiggsbosonparityatalinearcolliderusingthetauimpactparameterandtautorhonudecay
AT worekm measuringthehiggsbosonparityatalinearcolliderusingthetauimpactparameterandtautorhonudecay

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