E{sub 1+}/M{sub 1+} and S{sub 1+}/M{sub 1+} from an analysis of p(e,e{prime}p){pi}{sup 0} in the region of the {Delta} (1232) resonance at Q{sup 2}=3.2 (GeV/c){sup 2}

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The authors have analyzed exclusive p(e,e{prime}p){pi}{sup 0} data to determine the electromagnetic and scalar transition multipoles in the mass region of the {Delta} (1232) at the highest Q{sup 2} value where data exist. The ratio of the electric quadrupole and the magnetic dipole transition moments is determined to E{sub 1+}/M{sub 1+} = 0.06{+-}0.02{+-}0.03, and for the scalar quadrupole transition they find S{sub 1+}/M{sub 1+} = 0.07{+-}0.02{+-}0.03. The results rule out that perturbative QCD governs the dynamics of the {gamma}{sub {nu}}p{Delta} transition at such Q{sub 2}. They are more consistent with relativistic quark model calculations using the light cone formalism.

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Burkert, V. & Elouadrhiri, L. May 1, 1995.

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The authors have analyzed exclusive p(e,e{prime}p){pi}{sup 0} data to determine the electromagnetic and scalar transition multipoles in the mass region of the {Delta} (1232) at the highest Q{sup 2} value where data exist. The ratio of the electric quadrupole and the magnetic dipole transition moments is determined to E{sub 1+}/M{sub 1+} = 0.06{+-}0.02{+-}0.03, and for the scalar quadrupole transition they find S{sub 1+}/M{sub 1+} = 0.07{+-}0.02{+-}0.03. The results rule out that perturbative QCD governs the dynamics of the {gamma}{sub {nu}}p{Delta} transition at such Q{sub 2}. They are more consistent with relativistic quark model calculations using the light cone formalism.

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284 Kilobytes pages

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  • Journal Name: Phys Rev Lett; Other Information: Submitted to Phys Rev Lett

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  • Report No.: DOE/ER/40150-1529
  • Report No.: CEBAF-PR-95-01
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 756164
  • Archival Resource Key: ark:/67531/metadc707554

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  • May 1, 1995

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Thumbnail image of item number 1 in: 'E{sub 1+}/M{sub 1+} and S{sub 1+}/M{sub 1+} from an analysis of p(e,e{prime}p){pi}{sup 0} in the region of the {Delta} (1232) resonance at Q{sup 2}=3.2 (GeV/c){sup 2}'.
Thumbnail image of item number 2 in: 'E{sub 1+}/M{sub 1+} and S{sub 1+}/M{sub 1+} from an analysis of p(e,e{prime}p){pi}{sup 0} in the region of the {Delta} (1232) resonance at Q{sup 2}=3.2 (GeV/c){sup 2}'.
Thumbnail image of item number 3 in: 'E{sub 1+}/M{sub 1+} and S{sub 1+}/M{sub 1+} from an analysis of p(e,e{prime}p){pi}{sup 0} in the region of the {Delta} (1232) resonance at Q{sup 2}=3.2 (GeV/c){sup 2}'.
Thumbnail image of item number 4 in: 'E{sub 1+}/M{sub 1+} and S{sub 1+}/M{sub 1+} from an analysis of p(e,e{prime}p){pi}{sup 0} in the region of the {Delta} (1232) resonance at Q{sup 2}=3.2 (GeV/c){sup 2}'.

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Burkert, V. & Elouadrhiri, L. E{sub 1+}/M{sub 1+} and S{sub 1+}/M{sub 1+} from an analysis of p(e,e{prime}p){pi}{sup 0} in the region of the {Delta} (1232) resonance at Q{sup 2}=3.2 (GeV/c){sup 2}, article, May 1, 1995; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc707554/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.