Dynamic versus Static Hadronic Structure Functions

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'Static' structure functions are the probabilistic distributions computed from the square of the light-front wavefunctions of the target hadron. In contrast, the 'dynamic' structure functions measured in deep inelastic lepton-hadron scattering include the effects of rescattering associated with the Wilson line. Initial- and final-state rescattering, neglected in the parton model, can have a profound effect in QCD hard-scattering reactions, producing single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam-Tung relation in Drell-Yan reactions, nuclear shadowing, and non-universal nuclear antishadowing|novel leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I ... continued below

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7 pages

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Brodsky, Stanley J.; /SLAC & , January 9, 2009.

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'Static' structure functions are the probabilistic distributions computed from the square of the light-front wavefunctions of the target hadron. In contrast, the 'dynamic' structure functions measured in deep inelastic lepton-hadron scattering include the effects of rescattering associated with the Wilson line. Initial- and final-state rescattering, neglected in the parton model, can have a profound effect in QCD hard-scattering reactions, producing single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam-Tung relation in Drell-Yan reactions, nuclear shadowing, and non-universal nuclear antishadowing|novel leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also review how 'direct' higher-twist processes--where a proton is produced in the hard subprocess itself--can explain the anomalous proton-to-pion ratio seen in high centrality heavy ion collisions.

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7 pages

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  • Journal Name: Nucl.Phys.A827:327c-332c,2009; Conference: Invited talk at 18th International Conference on Particles and Nuclei (PANIC 08), Eilat, Israel, 9-14 Nov 2008

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  • Report No.: SLAC-PUB-13507
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 945283
  • Archival Resource Key: ark:/67531/metadc899754

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  • January 9, 2009

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 9, 2016, 11:17 p.m.

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Brodsky, Stanley J.; /SLAC & ,. Dynamic versus Static Hadronic Structure Functions, article, January 9, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc899754/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.