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arXiv · 1003.0482

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

Bo-Wen Xiao·Feng Yuan
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Abstract

We study the universality issue 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 those in deep inelastic lepton nucleus scattering. We demonstrate the non-universality by performing an explicit calculation in a particular model where the multiple gauge boson exchange contributions are summed up to all orders. We comment 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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Bo-Wen Xiao, Feng Yuan. 2010-03-02. Non-Universality of Transverse Momentum Dependent Parton Distributions at Small-x. https://doi.org/10.1103/physrevlett.105.062001

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