1. Probing jet medium interactions via Z(H) + jet momentum imbalances
- Author
-
Shu-Yi Wei, Lin Chen, Hanzhong Zhang, Centre de Physique Théorique [Palaiseau] (CPHT), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), and École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Energy loss ,heavy ion: scattering ,Physics and Astronomy (miscellaneous) ,Astrophysics::High Energy Astrophysical Phenomena ,energy loss ,Transport coefficient ,nucleus: energy ,FOS: Physical sciences ,lcsh:Astrophysics ,01 natural sciences ,Nuclear physics ,High Energy Physics - Phenomenology (hep-ph) ,0103 physical sciences ,lcsh:QB460-466 ,transport theory ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,quantum chromodynamics: perturbation theory ,High order ,Resummation ,numerical calculations ,010306 general physics ,Jet quenching ,Nuclear Experiment ,Engineering (miscellaneous) ,quark gluon: plasma ,Boson ,Physics ,energy: high ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Plasma ,High Energy Physics - Phenomenology ,jet: momentum ,boson: heavy ,resummation ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,effect: Sudakov ,Higgs boson ,lcsh:QC770-798 ,jet: quenching ,High Energy Physics::Experiment - Abstract
Different types of high energy hard probes are used to extract the jet transport properties of the Quark-Gluon Plasma created in heavy-ion collisions, of which the heavy boson tagged jets are undoubtedly the most sophisticated due to its clean decay signature and production mechanism. In this study, we used the resummation improved pQCD approach with high order correction in the hard factor to calculate the momentum ratio $$x_J$$ x J distributions of Z and Higgs (H) tagged jets. We found that the formalism can provide a good description of the 5.02 TeV pp data. Using the BDMPS energy loss formalism, along with the OSU 2 + 1D hydro to simulate the effect of the medium, we extracted the value of the jet transport coefficient to be around $${\hat{q}}_0=4\sim 8~\text {GeV}^2/\text {fm}$$ q ^ 0 = 4 ∼ 8 GeV 2 / fm by comparing with the Z + jet PbPb experimental data. The H + jet $$x_J$$ x J distribution were calculated in a similar manner in contrast and found to have a stronger Sudakov effect as compared with the Z + jet distribution. This study uses a clean color-neutral boson as trigger to study the jet quenching effect and serves as a complimentary method in the extraction of the QGP’s transport coefficient in high energy nuclear collisions.
- Published
- 2020