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The QCD Potential at O(1/m)
Within an effective field theory framework, we obtain an expression for thenext-to-leading term in the 1/m expansion of the singlet $Q{\bar Q}$ QCDpotential in terms of Wilson loops, which holds beyond perturbation theory. Weexplicitly evaluate this expression at one loop and compare the outcome wit...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2000
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.63.014023 http://cds.cern.ch/record/428377 |
| _version_ | 1780895160352112640 |
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| author | Brambilla, Nora Pineda, Antonio Soto, Joan Vairo, Antonio |
| author_facet | Brambilla, Nora Pineda, Antonio Soto, Joan Vairo, Antonio |
| author_sort | Brambilla, Nora |
| collection | CERN |
| description | Within an effective field theory framework, we obtain an expression for thenext-to-leading term in the 1/m expansion of the singlet $Q{\bar Q}$ QCDpotential in terms of Wilson loops, which holds beyond perturbation theory. Weexplicitly evaluate this expression at one loop and compare the outcome withthe existing perturbative results. The ambiguities in the definition of the QCDpotential beyond leading order in 1/m are briefly discussed. On general groundswe show that for quenched QED and fully Abelian-like models the 1/mcontribution exactly vanishes. |
| id | cern-428377 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2000 |
| record_format | invenio |
| spelling | cern-4283772023-02-27T03:51:49Zdoi:10.1103/PhysRevD.63.014023http://cds.cern.ch/record/428377engBrambilla, NoraPineda, AntonioSoto, JoanVairo, AntonioThe QCD Potential at O(1/m)Particle Physics - PhenomenologyWithin an effective field theory framework, we obtain an expression for thenext-to-leading term in the 1/m expansion of the singlet $Q{\bar Q}$ QCDpotential in terms of Wilson loops, which holds beyond perturbation theory. Weexplicitly evaluate this expression at one loop and compare the outcome withthe existing perturbative results. The ambiguities in the definition of the QCDpotential beyond leading order in 1/m are briefly discussed. On general groundswe show that for quenched QED and fully Abelian-like models the 1/mcontribution exactly vanishes.Within an effective field theory framework, we obtain an expression for the next-to-leading term in the $1/m$ expansion of the singlet $Q{\bar Q}$ QCD potential in terms of Wilson loops, which holds beyond perturbation theory. The ambiguities in the definition of the QCD potential beyond leading order in $1/m$ are discussed and a specific expression for the $1/m$ potential is given. We explicitly evaluate this expression at one loop and compare the outcome with the existing perturbative results. On general grounds we show that for quenched QED and fully Abelian-like models this expression exactly vanishes.hep-ph/0002250CERN-TH-2000-053UB-ECM-PF-00-03UWTHPH-1999-47CERN-TH-2000-053UB-ECM-PF-2000-03UWTHPH-1999-47oai:cds.cern.ch:4283772000-02-24 |
| spellingShingle | Particle Physics - Phenomenology Brambilla, Nora Pineda, Antonio Soto, Joan Vairo, Antonio The QCD Potential at O(1/m) |
| title | The QCD Potential at O(1/m) |
| title_full | The QCD Potential at O(1/m) |
| title_fullStr | The QCD Potential at O(1/m) |
| title_full_unstemmed | The QCD Potential at O(1/m) |
| title_short | The QCD Potential at O(1/m) |
| title_sort | qcd potential at o(1/m) |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1103/PhysRevD.63.014023 http://cds.cern.ch/record/428377 |
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