Seminar in Hadronic Physics

Anisotropic jet quenching in semi-Quark-Gluon Plasmas with magnetic monopoles

Jiechen Xu

Columbia University

In ultra-relativistic heavy-ion collisions at RHIC and LHC, high energy jet fragments' nuclear modification factor (R_AA) and azimuthal anisotropy (v₂) provide a stringent set of observables in constraining parton-medium interactions. I will present in this talk a new jet quenching framework, CUJET3.0, that is shown to simultaneously account for both high p_T single inclusive hadron's R_AA and v₂ at both RHIC and LHC energies. CUJET3.0 generalizes the previous perturbative QCD (pQCD) based CUJET2.0 model by incorporating non-perturbative lattice QCD constraints on the suppression of color-electric scatterings (aka “semi-QGP” of Pisarski et al) and the enhancement of scatterings due to emergent color-magnetic monopoles near the QCD confinement transition temperature (aka “magnetic scenario” of Liao and Shuryak). The CUJET3.0 analysis provides a novel connection between the jet transport coefficient controlling hard jet quenching observables and the bulk soft “perfect fluidity” of quark-gluon plasmas. I will also present results of high p_T open heavy flavor's R_AA and v₂ from CUJET3.0, which can be tested in future RHIC and LHC measurements to complement the light quark sector.

References:
[1] Jiechen Xu, Jinfeng Liao, Miklos Gyulassy, arXiv:1411.3673 [hep-ph].
[2] Jiechen Xu, Alessandro Buzzatti, Miklos Gyulassy, JHEP 1408, 063 (2014) (arXiv:1402.2956 [hep-ph])