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Title:
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Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation
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Author:
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Pineda, Antonio
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Other authors:
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Universitat de Barcelona |
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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. |
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Subject(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) |
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Rights:
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(c) The American Physical Society, 2002
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Document type:
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Article
Article - Published version |
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Published by:
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The American Physical Society
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