Abstract
We derive the effective action of the hard large-x valence charges up to fourth order in their density. Such non-Gaussian weight functionals contribute at leading order in N_c to the connected two-gluon production diagrams which determine di-hadron correlations. The corresponding diagrams are not necessarily (highly) suppressed by the density of valence charges since their infrared divergences differ from those obtained in a Gaussian theory. Therefore, it appears prudent to include such higher dimensional operators when determining initial ensembles for JIMWLK evolution of higher n-point functions of Wilson lines.
Original language | English |
---|---|
Article number | 014018 |
Journal | Physical Review D |
Volume | 84 |
Issue number | 1 |
DOIs | |
Publication status | Published - 14 Jul 2011 |
Bibliographical note
12 pages; v2: fixed layoutKeywords
- hep-ph
- nucl-th