Quarkonium Spectroscopy and Perturbative QCD: A New Perspective

We study the energy spectrum of bottomonium in perturbative QCD, taking $\als(M_Z)=0.1181 \pm 0.0020$ as input and fixing $m_b^{\bar{\rm MS}}(m_b^{\bar{\rm MS}})$ on the $\Upsilon(1S)$ mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as...

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Detalles Bibliográficos
Autores principales: Brambilla, Nora, Sumino, Y, Vairo, Antonio
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(01)00611-6
http://cds.cern.ch/record/485332
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author Brambilla, Nora
Sumino, Y
Vairo, Antonio
author_facet Brambilla, Nora
Sumino, Y
Vairo, Antonio
author_sort Brambilla, Nora
collection CERN
description We study the energy spectrum of bottomonium in perturbative QCD, taking $\als(M_Z)=0.1181 \pm 0.0020$ as input and fixing $m_b^{\bar{\rm MS}}(m_b^{\bar{\rm MS}})$ on the $\Upsilon(1S)$ mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as long as the coupling constant remains smaller than one. We perform a detailed analysis and discuss the size of non-perturbative effects. A new qualitative picture on the structure of the bottomonium spectrum is provided. The lowest-lying $c\bar{c}$ and $b\bar{c}$ states are also examined.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-4853322019-09-30T06:29:59Zdoi:10.1016/S0370-2693(01)00611-6http://cds.cern.ch/record/485332engBrambilla, NoraSumino, YVairo, AntonioQuarkonium Spectroscopy and Perturbative QCD: A New PerspectiveParticle Physics - PhenomenologyWe study the energy spectrum of bottomonium in perturbative QCD, taking $\als(M_Z)=0.1181 \pm 0.0020$ as input and fixing $m_b^{\bar{\rm MS}}(m_b^{\bar{\rm MS}})$ on the $\Upsilon(1S)$ mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as long as the coupling constant remains smaller than one. We perform a detailed analysis and discuss the size of non-perturbative effects. A new qualitative picture on the structure of the bottomonium spectrum is provided. The lowest-lying $c\bar{c}$ and $b\bar{c}$ states are also examined.hep-ph/0101305TU-607IFUM-677-FToai:cds.cern.ch:4853322001-01-27
spellingShingle Particle Physics - Phenomenology
Brambilla, Nora
Sumino, Y
Vairo, Antonio
Quarkonium Spectroscopy and Perturbative QCD: A New Perspective
title Quarkonium Spectroscopy and Perturbative QCD: A New Perspective
title_full Quarkonium Spectroscopy and Perturbative QCD: A New Perspective
title_fullStr Quarkonium Spectroscopy and Perturbative QCD: A New Perspective
title_full_unstemmed Quarkonium Spectroscopy and Perturbative QCD: A New Perspective
title_short Quarkonium Spectroscopy and Perturbative QCD: A New Perspective
title_sort quarkonium spectroscopy and perturbative qcd: a new perspective
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(01)00611-6
http://cds.cern.ch/record/485332
work_keys_str_mv AT brambillanora quarkoniumspectroscopyandperturbativeqcdanewperspective
AT suminoy quarkoniumspectroscopyandperturbativeqcdanewperspective
AT vairoantonio quarkoniumspectroscopyandperturbativeqcdanewperspective

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