Non-Universality of Transverse Momentum Dependent Parton Distributions at Small-x

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We study the universality of the transverse momentum dependent parton distributions at small-x, by comparing the initial/final state interaction effects in dijet-correlation in pA collisions with that in deep inelastic lepton nucleus scattering. We demonstrate the non-universality by an explicit calculation in a particular model where the multiple gauge boson exchange contributions are summed up to all orders. We furthercomment on the implications of our results on the theoretical interpretation of di-hadron correlation in dA collisions in terms of the saturation phenomena in deep inelastic lepton nucleus scattering.

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Xiao, Bowen & Yuan, Feng February 22, 2010.

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Description

We study the universality of the transverse momentum dependent parton distributions at small-x, by comparing the initial/final state interaction effects in dijet-correlation in pA collisions with that in deep inelastic lepton nucleus scattering. We demonstrate the non-universality by an explicit calculation in a particular model where the multiple gauge boson exchange contributions are summed up to all orders. We furthercomment on the implications of our results on the theoretical interpretation of di-hadron correlation in dA collisions in terms of the saturation phenomena in deep inelastic lepton nucleus scattering.

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11

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  • Journal Name: Physical Review Letters

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  • Report No.: LBNL-3099E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 982842
  • Archival Resource Key: ark:/67531/metadc1013074

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  • February 22, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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Xiao, Bowen & Yuan, Feng. Non-Universality of Transverse Momentum Dependent Parton Distributions at Small-x, article, February 22, 2010; (digital.library.unt.edu/ark:/67531/metadc1013074/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.