Scaling limit of deeply virtual Compton scattering

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The author outlines a perturbative QCD approach to the analysis of the deeply virtual Compton scattering process {gamma}{sup *}p {r_arrow} {gamma}p{prime} in the limit of vanishing momentum transfer t=(p{prime}{minus}p){sup 2}. The DVCS amplitude in this limit exhibits a scaling behavior described by a two-argument distributions F(x,y) which specify the fractions of the initial momentum p and the momentum transfer r {equivalent_to} p{prime}{minus}p carried by the constituents of the nucleon. The kernel R(x,y;{xi},{eta}) governing the evolution of the non-forward distributions F(x,y) has a remarkable property: it produces the GLAPD evolution kernel P(x/{xi}) when integrated over y and reduces to the Brodsky-Lepage ... continued below

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273 Kilobytes pages

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Radyushkin, A. July 1, 2000.

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The author outlines a perturbative QCD approach to the analysis of the deeply virtual Compton scattering process {gamma}{sup *}p {r_arrow} {gamma}p{prime} in the limit of vanishing momentum transfer t=(p{prime}{minus}p){sup 2}. The DVCS amplitude in this limit exhibits a scaling behavior described by a two-argument distributions F(x,y) which specify the fractions of the initial momentum p and the momentum transfer r {equivalent_to} p{prime}{minus}p carried by the constituents of the nucleon. The kernel R(x,y;{xi},{eta}) governing the evolution of the non-forward distributions F(x,y) has a remarkable property: it produces the GLAPD evolution kernel P(x/{xi}) when integrated over y and reduces to the Brodsky-Lepage evolution kernel V(y,{eta}) after the x-integration. This property is used to construct the solution of the one-loop evolution equation for the flavor non-singlet part of the non-forward quark distribution.

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273 Kilobytes pages

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  • Journal Name: Phys.Lett. B380 (1996) 417-425; Other Information: Submitted to Phys.Lett. B380 (1996) 417-425

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  • Report No.: DOE/ER/40150-1597
  • Report No.: CEBAF-TH-96-05
  • Report No.: hep-ph/9604317
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 756644
  • Archival Resource Key: ark:/67531/metadc710589

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  • July 1, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 5, 2016, 9:44 p.m.

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Radyushkin, A. Scaling limit of deeply virtual Compton scattering, article, July 1, 2000; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc710589/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.