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Dynamic versus Static Structure Functions and Novel Diffractive Effects in QCD

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arxiv 0811.0875 v1 pith:HJZGIXOQ submitted 2008-11-06 hep-ph

classification hep-ph
keywords diffractiveeffectsreactionscomputedhadronichardheavylight-front
verification ladder T0 review T1 audit T2 compute T3 formal

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Initial- and final-state rescattering, neglected in the parton model, have a profound effect in QCD hard-scattering reactions, predicting single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions, and nuclear shadowing and non-universal antishadowing--leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also discuss the use of diffraction to materialize the Fock states of a hadronic projectile and test QCD color transparency, and anomalous heavy quark effects. The presence of direct higher-twist processes where a proton is produced in the hard subprocess can explain the large proton-to-pion ratio seen in high centrality heavy ion collisions. I emphasize the importance of distinguishing between static observables such as the probability distributions computed from the square of the light-front wavefunctions versus dynamical observables which include the effects of rescattering.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Is the Momentum Sum Rule Valid for Nuclear Structure Functions ?

    hep-ph 2019-08 reject novelty 6.0 of 10

    The paper contends that the momentum sum rule is not valid for nuclear parton distribution functions because the operator product expansion fails for nuclear targets.

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