Nuclear transverse momentum imbalance in the color dipole approach at the LHC regime

Abstract

Transverse momentum broadening of a parton propagating through a large nucleus is evaluated in the color dipole approach using different models for the dipole cross section or unintegrated gluon distribution, which lead to different values of the coefficient $C_{\mathcal{F}}(0,s)$. Numerical calculations are compared to data extracted from LHCb and ALICE experiments for nuclear broadening of $J/\psi$. We find that different models which describe the small-$x$ data predict values of $\Delta p_T^2$ that agree reasonably well with experiment, specially for forward rapidity. The centrality dependence was also analysed and the models are consistent with the ALICE measurements.

6 pages, 2 figure, 2 tables

References in corpus (16)

• NLO evolution of color dipoles
• Quark contribution to the small-$x$ evolution of color dipole
• Triumvirate of Running Couplings in Small-x Evolution
• Non-linear QCD meets data: A global analysis of lepton-proton scattering with running coupling BK evolution
• Mining for Gluon Saturation at Colliders
• Forward $J/\psi$ production in proton-nucleus collisions at high energy
• CGC predictions for p+A collisions at the LHC and signature of QCD saturation
• Running coupling and power corrections in nonlinear evolution at the high--energy limit
• Multiple scattering effects on heavy meson production in p+A collisions at backward rapidity
• Nuclear modification of vector boson production in proton-lead collisions at the LHC
• Investigating the inclusive transverse spectra in high-energy $pp$ collisions in the context of geometric scaling framework
• Transverse momentum broadening of vector boson production in high energy nuclear collisions
• Transverse momentum imbalance of back-to-back particle production in p+A and e+A collisions
• Role of nuclear gluon distribution on particle production in heavy ion collisions
• Nuclear $p_{\perp }$-broadening of Drell-Yan and quarkonium production from SPS to LHC
• Color-Dipole Picture versus Hard Pomeron in Deep Inelastic Scattering

Cited by in corpus (1)

• QED medium effects in (anti)neutrino-nucleus and electron-nucleus scattering: elastic scattering on nucleons