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Titolo:
Electromagnetic transition form factor of pseudoscalar mesons and eta-eta ' mixing - art. no. 113006
Autore:
Cao, J; Cao, FG; Huang, T; Ma, BQ;
Indirizzi:
Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China Acad Sinica Beijing Peoples R China 100039 ijing 100039, Peoples R China Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China Acad Sinica Beijing Peoples R China 100080 ijing 100080, Peoples R China CCAST, World Lab, Beijing 100080, Peoples R China CCAST Beijing Peoples R China 100080 ab, Beijing 100080, Peoples R China
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 11, volume: 5811, anno: 1998,
pagine: 3006 -
SICI:
0556-2821(199812)5811:11<3006:ETFFOP>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERTURBATIVE QCD ANALYSIS; PION WAVE-FUNCTION; TRANSVERSE-MOMENTUM; EXCLUSIVE PROCESSES; INTRINSIC CHARM; WIGNER ROTATION; SPIN; SCATTERING; PROTON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Cao, J Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R ChinaAcad Sinica Beijing Peoples R China 100039 00039, Peoples R China
Citazione:
J. Cao et al., "Electromagnetic transition form factor of pseudoscalar mesons and eta-eta ' mixing - art. no. 113006", PHYS REV D, 5811(11), 1998, pp. 3006

Abstract

The electromagnetic transition form factors of eta and eta' are calculatedin light-cone perturbation theory. We show that it is unreliable to determine the eta-eta' mixing angle without any additional normalization conditions other than their decay widths to two photons. The possible intrinsic <c(c)over bar> component in the flavor singlet is investigated. The heavy quark pair has distinct properties from the light ones in electromagnetic transition processes of pseudoscalar mesons. It is possible to explore the size of the <c(c)over bar> component and our numerical results disfavor a large portion of the <c(c)over bar> component. [S0556-2821(98)02321-2].

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Documento generato il 08/04/20 alle ore 11:07:51