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Article

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Published version

Publication date

2002

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12464

Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation

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Related resource

http://dx.doi.org/10.1103/PhysRevD.66.054022

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.

Subject

Teoria de camps (Física), Particles (Nuclear physics), Teoria de camps (Física), Renormalització (Física), Pertorbació (Dinàmica quàntica)

Subject (English)

Field theory (Physics), Partícules (Física nuclear), Renormalization (Physics)), Perturbation (Quantum dynamics)

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

PINEDA, Antonio (Pineda Ruiz). Next-to-leading-log renormalization-group running in heavy-quarkonium creation and annihilation. Physical Review D. 2002. Vol. 66, num. 5, pags. 054022-1-054022-8. ISSN 0556-2821. [consulted: 11 of June of 2026]. Available at: https://hdl.handle.net/2445/12464

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