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Titolo:
RESTRICTED CONFORMAL-INVARIANCE IN QCD AND ITS PREDICTIVE POWER FOR VIRTUAL 2-PHOTON PROCESSES - ART. NO. 054005
Autore:
MULLER D;
Indirizzi:
CERN,DIV TH CH-1211 GENEVA 23 SWITZERLAND
Titolo Testata:
Physical review. D. Particles and fields
fascicolo: 5, volume: 5805, anno: 1998,
pagine: 4005 -
SICI:
0556-2821(1998)5805:5<4005:RCIQAI>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEEP-INELASTIC-SCATTERING; ENERGY-MOMENTUM-TENSOR; TO-LEADING ORDER; PERTURBATIVE QCD; QUANTUM CHROMODYNAMICS; EVOLUTION KERNELS; WAVE-FUNCTIONS; SUM-RULES; DISTRIBUTION AMPLITUDE; EXCLUSIVE PROCESSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
74
Recensione:
Indirizzi per estratti:
Citazione:
D. Muller, "RESTRICTED CONFORMAL-INVARIANCE IN QCD AND ITS PREDICTIVE POWER FOR VIRTUAL 2-PHOTON PROCESSES - ART. NO. 054005", Physical review. D. Particles and fields, 5805(5), 1998, pp. 4005

Abstract

The conformal algebra provides powerful constraints, which guarantee that renormalized conformally covariant operators exist in the hypothetical conformal limit of the theory, where the beta-function vanishes. Thus, in this limit also the conformally covariant operator product expansion on the light cone holds true. This operator product expansionhas predictive power for two-photon processes in the generalized Bjorken region. Only the Wilson coefficients and the anomalous dimensions that are known from deep inelastic scattering are required for the prediction of all other two-photon processes in terms of the process-dependent off-diagonal expectation values of conformal operators. It is checked that the next-to-leading order calculations for the flavor non-singlet meson transition form factors are consistent with the corrections to the corresponding Wilson coefficients in deep inelastic scattering. [S0556-2821(98)04215-5].

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Documento generato il 07/04/20 alle ore 23:02:22