Charge-dependent transverse momentum and its impact on the search for the chiral magnetic wave
Wenya Wu, C. Wang, Qiye Shou, Y. G., Liang Zheng
Abstract
The chiral magnetic wave (CMW) is sought using the charge asymmetry (${A}_{\mathrm{ch}}$) dependence of anisotropic flow in heavy-ion collisions. The charge-dependent transverse momentum (${p}_{\mathrm{T}}$), however, could play a role as a background. With the string fragmentation models, including pythia, we demonstrate the origin of the ${A}_{\mathrm{ch}}\text{\ensuremath{-}}{p}_{\mathrm{T}}$ correlation and its connection with the local charge conservation (LCC). The impact of ${A}_{\mathrm{ch}}\text{\ensuremath{-}}{p}_{\mathrm{T}}$ and its behavior in varied kinematic windows are also discussed. This study provides more insights for the search for the CMW and comprehending the collective motion of the quark-gluon plasma.