Year: 2025
Type: article
Abstract: A bstract The dilepton production at forward rapidities in hadronic collisions at the LHC energies is considered and the helicity density matrix elements of gauge bosons that enter the Drell-Yan angular coefficients associated with the gauge boson decay ( G = γ ∗ , Z 0 , W ) are derived using the color-dipole S -matrix framework. We show results for pp collisions at $$ \sqrt{s} $$ s = 14 TeV for the nonvanishing helicity density matrix elements in the rapidity range of 2.0 ≤ y ≤ 4.0 of the gauge boson. We consider different models for the proton unintegrated gluon distributions, among others a solution of the Balitsky-Kovchegov equation. We compare the associated predictions with those obtained disregarding the non-linear term in the evolution equation. In addition, the Lam-Tung relation is discussed.
Source: Journal of High Energy Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4414749637