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Two particle correlations: Saturation and issues with universality

Journal Article · · Nuclear Physics A
OSTI ID:1021410
We study the universality issue of the transverse momentum dependent parton distributions at small-x, by comparing the initial/final state interaction effects in di-jet 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. In addition, we generalize the model calculation to the CGC formalism, and find the non-universality for quark distributions in CGC.
Research Organization:
Brookhaven National Laboratory (BNL) Riken BNL Research Center
Sponsoring Organization:
DOE - OFFICE OF SCIENCE
DOE Contract Number:
AC02-98CH10886
OSTI ID:
1021410
Report Number(s):
BNL--95261-2011-JA
Journal Information:
Nuclear Physics A, Journal Name: Nuclear Physics A Journal Issue: 1 Vol. 854
Country of Publication:
United States
Language:
English