Lenz, A. 
; Wittmann, M. ; Stein, E.
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Physics Letters B |
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| Verlag: | ELSEVIER SCIENCE BV |
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| Ort der Veröffentlichung: | AMSTERDAM |
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| Band: | 581 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 3-4 |
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| Seitenbereich: | S. 199-206 |
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| Datum: | 2004 |
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| Institutionen: | Physik > Institut für Theoretische Physik |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1016/j.physletb.2003.12.009 | DOI |
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| Stichwörter / Keywords: | CHIRAL SYMMETRY-BREAKING; LARGE MOMENTUM-TRANSFER; QUANTUM CHROMODYNAMICS; PROTON; QCD; NEUTRON; BARYONS; (GEV/C)(2); Q(2)=1.75; TRANSFERS; QCD; nucleon; power corrections; distribution amplitudes; electromagnetic form factors |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 71749 |
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Zusammenfassung
We calculate the electromagnetic form factors of the nucleon within the light-cone sum rule approach. In comparison to previous work [Phys. Rev. D 65 (2002) 074011] we suggest to use a pure isospin-1/2 interpolating field for the nucleon, since the Chernyak-Zhitnitsky current leads to numerically large, unphysical, isospin violating contributions. The leading-order sum rules are derived for the ...
Zusammenfassung
We calculate the electromagnetic form factors of the nucleon within the light-cone sum rule approach. In comparison to previous work [Phys. Rev. D 65 (2002) 074011] we suggest to use a pure isospin-1/2 interpolating field for the nucleon, since the Chernyak-Zhitnitsky current leads to numerically large, unphysical, isospin violating contributions. The leading-order sum rules are derived for the form factors and the results are confronted with the experimental data. Our approach tends to favor the nucleon distribution amplitudes that are not far from the asymptotic shape. (C) 2004 Elsevier B.V. All rights reserved.
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