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Title: Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation
Author: Pineda, Antonio (Pineda Ruiz)
Keywords: 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)
Issue Date: 2002
Publisher: The American Physical Society
Abstract: 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.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review D, 2002, vol. 66, núm. 5, p. 054022-1-054022-8
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ISSN: 0556-2821
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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