Unequal rapidity correlators in the dilute limit of the JIMWLK evolution
Lappi, Tuomas; Ramnath, Andrecia (2019). Unequal rapidity correlators in the dilute limit of the JIMWLK evolution. Physical Review D, 100 (5), 054003. DOI: 10.1103/PhysRevD.100.054003
Published inPhysical Review D
© The Authors 2019
We study unequal rapidity correlators in the stochastic Langevin picture of Jalilian-Marian–Iancu–McLerran–Weigert–Leonidov–Kovner (JIMWLK) evolution in the color glass condensate effective field theory. We discuss a diagrammatic interpretation of the long-range correlators. By separately evolving the Wilson lines in the direct and complex conjugate amplitudes, we use the formalism to study two-particle production at large rapidity separations. We show that the evolution between the rapidities of the two produced particles can be expressed as a linear equation, even in the full nonlinear limit. We also show how the Langevin formalism for two-particle correlations reduces to a Balitsky-Fadin-Kuraev-Lipatov (BFKL) picture in the dilute limit and in momentum space, providing an interpretation of BFKL evolution as a stochastic process for color charges.
PublisherAmerican Physical Society
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Research post as Academy Research Fellow, AoF; Research costs of Academy Research Fellow, AoF; ERC European Research Council, H2020
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.