Z+jet productions in heavy-ion collisions

Abstract

We report a systematic study of Z+jet correlation in Pb+Pb collisions at the LHC by combining the next-leading-order matrix elements calculations with matched parton shower in Sherpa for the initial Z+jet production, and Linear Boltzmann transport Model for jet propagation in the expanding quark-gluon-plasma. Our numerical results can well explain CMS measurements on Z+jet correlation in Pb+Pb collisions: the shift of $p_T$ imbalance $x_{jZ}=p_T^{jet}/p_T^Z$ and their mean values, the suppression of the average number of jet partners per Z boson $R_{jZ}$, as well as the modification of azimuthal angle correlations $\Delta {\varphi }_{jZ}$. We also demonstrate that high-order corrections play a significant role in the understanding of Z+jet correlations at high energies.

4 pages, 4 figures, talk at Quark Matter 2018 conference

References in corpus (5)

• The physics of $Z^0/{\gamma }^{\ast }$-tagged jets at the LHC
• A systematic study of direct photon production in heavy ion collisions
• Z+jet correlation with NLO-matched parton-shower and jet-medium interaction in high-energy nuclear collisions
• Multiple Parton Scattering in Nuclei: Quark-quark Scattering
• Study of W and Z Boson Production in Proton-Lead Collisions at the LHC with KP Nuclear Parton Distributions

Cited by in corpus (2)

• Parton splitting scales of reclustered large-radius jets in high-energy nuclear collisions
• Quenching of jets tagged with $W$ bosons in high-energy nuclear collisions