Soft Contribution to Form Factors of Gamma<sup>*</sup> p -> Delta<sup>+</sup> Transition

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The purely nonperturbative soft contribution to the gamma<sup>*</sup> p -> delta<sup>+</sup> transition form factors is estimated using the local quark-hadron duality approach. Our results show that the soft contribution is dominated by the magnetic transition: the ratio G<sup>*</sup> <sub>E</sub> Q<sup>2</sup>/ G<sup>*</sup><sub>M</sub> Q<sup>2</sup> is small for all accessible Q<sup>2</sup>, in contrast to pQCD expectations that G<sup>*</sup><sub>E</sub> (Q<sup>2</sup>) -> -G<sup>*</sup><sub>M</sub> (Q<sup>2</sup>). We also found that the soft contribution to the magnetic form factor is large enough to explain the magnitude of existing experimental data.

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page(s) 6509

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Radyushkin, Anatoly & Belyaev, Vladimir September 1, 1995.

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The purely nonperturbative soft contribution to the gamma<sup>*</sup> p -> delta<sup>+</sup> transition form factors is estimated using the local quark-hadron duality approach. Our results show that the soft contribution is dominated by the magnetic transition: the ratio G<sup>*</sup> <sub>E</sub> Q<sup>2</sup>/ G<sup>*</sup><sub>M</sub> Q<sup>2</sup> is small for all accessible Q<sup>2</sup>, in contrast to pQCD expectations that G<sup>*</sup><sub>E</sub> (Q<sup>2</sup>) -> -G<sup>*</sup><sub>M</sub> (Q<sup>2</sup>). We also found that the soft contribution to the magnetic form factor is large enough to explain the magnitude of existing experimental data.

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page(s) 6509

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  • Journal Name: Physical Review D; Journal Volume: 53

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  • Report No.: CEBAF-TH-95-15
  • Report No.: hep-ph/9509267
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 954415
  • Archival Resource Key: ark:/67531/metadc934213

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 1, 1995

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 10:09 p.m.

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Radyushkin, Anatoly & Belyaev, Vladimir. Soft Contribution to Form Factors of Gamma<sup>*</sup> p -> Delta<sup>+</sup> Transition, article, September 1, 1995; [Newport News, Virginia]. (digital.library.unt.edu/ark:/67531/metadc934213/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.