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dc.contributor.authorPineda, Antonio (Pineda Ruiz)cat
dc.description.abstractWe complete the leading-log renormalization group scaling of the nonrelativistic (NRQCD) Lagrangian at O ( 1 / m 2 ) . The next-to-next-to-leading-log renormalization group scaling of the potential NRQCD Lagrangian (as far as the singlet is concerned) is also obtained in the situation m α s ≫ Λ QCD . As a by-product, we obtain the heavy quarkonium spectrum with the same accuracy in the situation m α 2 s ≳ Λ QCD . When Λ QCD ≪ m α 2 s , this is equivalent to obtain the whole set of O ( m α ( n + 4 ) s ln n α s ) terms in the heavy quarkonium spectrum. The implications of our results in the nonperturbative situation m α s ∼ Λ QCD are also mentioned.-
dc.publisherThe American Physical Societyeng
dc.relation.isformatofReproducció digital del document publicat en format paper, proporcionada per PROLA i
dc.relation.ispartofPhysical Review D, 2002, vol. 65, núm. 7, p. 074007-1-074007-10cat
dc.rights(c) The American Physical Society, 2002eng
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationTeoria de camps (Física)cat
dc.subject.classificationPartícules (Física nuclear)cat
dc.subject.classificationRenormalització (Física)cat
dc.subject.classificationPertorbació (Dinàmica quàntica)cat
dc.subject.otherField theory (Physics)eng
dc.subject.otherParticles (Nuclear physics)eng
dc.subject.otherRenormalization (Physics)eng
dc.subject.otherPerturbation (Quantum dynamics)eng
dc.titleRenormalization group improvement of the nonrelativistic RQCD Lagrangian and heavy quarkonium spectrumeng
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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