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http://hdl.handle.net/2445/12464
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 http://dx.doi.org/10.1103/PhysRevD.66.054022 |
It is part of: | Physical Review D, 2002, vol. 66, núm. 5, p. 054022-1-054022-8 |
URI: | http://hdl.handle.net/2445/12464 |
Related resource: | http://dx.doi.org/10.1103/PhysRevD.66.054022 |
ISSN: | 0556-2821 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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