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Título:
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Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation
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Autor/a:
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Pineda, Antonio
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Otros autores:
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Universitat de Barcelona |
Abstract:
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In the framework of potential NRQCD, we obtain the next-to-leading-log renormalization-group running of the matching coefficients for the heavy quarkonium production currents near threshold. This allows to obtain S-wave heavy-quarkonium production/annihilation observables with next-to-leading-log accuracy within perturbative QCD. In particular, we give expressions for the decays of heavy quarkonium to e^+e^- and to two photons. We also compute the O(m\alpha^8\ln^3\alpha) corrections to the Hydrogen spectrum. |
Materia(s):
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-Teoria de camps (Física) -Particles (Nuclear physics) -Teoria de camps (Física) -Renormalització (Física) -Pertorbació (Dinàmica quàntica) -Field theory (Physics) -Partícules (Física nuclear) -Renormalization (Physics)) -Perturbation (Quantum dynamics) |
Derechos:
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(c) The American Physical Society, 2002
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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