$m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm

Two ratios of two- and three-jet heavy quark production rates in $e^+ e^-$ annihilation at the $Z$ peak are presented at next-to-leading order for the Cambridge jet-clustering algorithm. We study the uncertainties due to the unknowledge of higher order corrections. We show that for one of the ratios...

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Detalles Bibliográficos
Autores principales: Bilenky, Mikhail S., Caberera, Susana, Fuster, Joan, Marti, Salvador, Rodrigo, German, Santamaria, Arcadi
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.60.114006
http://cds.cern.ch/record/360788
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author Bilenky, Mikhail S.
Caberera, Susana
Fuster, Joan
Marti, Salvador
Rodrigo, German
Santamaria, Arcadi
author_facet Bilenky, Mikhail S.
Caberera, Susana
Fuster, Joan
Marti, Salvador
Rodrigo, German
Santamaria, Arcadi
author_sort Bilenky, Mikhail S.
collection CERN
description Two ratios of two- and three-jet heavy quark production rates in $e^+ e^-$ annihilation at the $Z$ peak are presented at next-to-leading order for the Cambridge jet-clustering algorithm. We study the uncertainties due to the unknowledge of higher order corrections. We show that for one of the ratios, when expressed in terms of the running mass at the $m_Z$ scale, the results are particularly stable with respect to the change in the renormalization scale. The experimental study of this observable opens the possibility for an improvement in the measurement of $m_b(m_Z)$ made by DELPHI, thus confirming the running of the $b$-quark mass.
id cern-360788
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3607882023-03-14T19:00:17Zdoi:10.1103/PhysRevD.60.114006http://cds.cern.ch/record/360788engBilenky, Mikhail S.Caberera, SusanaFuster, JoanMarti, SalvadorRodrigo, GermanSantamaria, Arcadi$m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithmParticle Physics - PhenomenologyTwo ratios of two- and three-jet heavy quark production rates in $e^+ e^-$ annihilation at the $Z$ peak are presented at next-to-leading order for the Cambridge jet-clustering algorithm. We study the uncertainties due to the unknowledge of higher order corrections. We show that for one of the ratios, when expressed in terms of the running mass at the $m_Z$ scale, the results are particularly stable with respect to the change in the renormalization scale. The experimental study of this observable opens the possibility for an improvement in the measurement of $m_b(m_Z)$ made by DELPHI, thus confirming the running of the $b$-quark mass.We consider the production of heavy quark jets at the $Z$-pole at the next-to-leading order (NLO) using the {\it Cambridge jet-algorithm}. We study the effects of the quark mass in two- and three-jet observables and the uncertainty due to unknown higher order corrections as well as due to fragmentation. We found that the three-jet observable has remarkably small NLO corrections, which are stable with respect to the change of the renormalization scale, when expressed in terms of the {\it running quark mass} at the $m_Z$-scale. The size of the hadronization uncertainty for this observable remains reasonably small and is very stable with respect to changes in the jet resolution parameter $y_c$.hep-ph/9807489FTUV-98-61IFIC-98-62FTUV-98-61IFIC-98-62oai:cds.cern.ch:3607881998-07-27
spellingShingle Particle Physics - Phenomenology
Bilenky, Mikhail S.
Caberera, Susana
Fuster, Joan
Marti, Salvador
Rodrigo, German
Santamaria, Arcadi
$m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm
title $m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm
title_full $m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm
title_fullStr $m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm
title_full_unstemmed $m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm
title_short $m_{b}(m_{Z})$ from jet production at the $Z$ peak in the Cambridge algorithm
title_sort $m_{b}(m_{z})$ from jet production at the $z$ peak in the cambridge algorithm
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.60.114006
http://cds.cern.ch/record/360788
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AT martisalvador mbmzfromjetproductionatthezpeakinthecambridgealgorithm
AT rodrigogerman mbmzfromjetproductionatthezpeakinthecambridgealgorithm
AT santamariaarcadi mbmzfromjetproductionatthezpeakinthecambridgealgorithm

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