Abstract
When an energetic parton traversing the QCD medium, it may suffer multiple scatterings and lose energy. This jet quenching phenomenon may lead to the suppression of leading hadron productions as well as medium modifications of full jet observables in heavy-ion collisions. In this talk we discuss the nuclear modificationfactors and yield ratios of identified meson such as η, ρ0, φ, ω, and $ K_{\rm{S}}^0 $ as well as π meson at large pT in A+A collisions at the next to-leading order (NLO) with high-twist approach of parton energy loss. Then we discuss a newly developed formalism of combing NLO matrix elements and parton shower (PS) for initial hard production with parton energy loss in the QGP, and its application in investigating massivegauge boson(Z0/W±)tagged jet productions and b $ \bar {b} $ dijet correlations in Pb+Pb at the LHC.
Highlights
The quark-gluon plasma (QGP), a deconfined matter composed of quarks and gluons, is expected to be created in relativistic heavy-ion collisions (HIC)
Jet quenching tells that when a fast parton passing through the hot/dense QCD medium it may suffer multiple scattering with other partons in the medium and lose a lot of energy, which may lead to the attenuation of leading hadrons [1, 2, 4,5,6,7], and medium modifications of jet productions and jet substructures [3, 8,9,10,11]
Even though in A+A collisions the quark fraction contribution will increase because gluon should lose more energy than quark due to its large color charge, we expect this vairation of parton chemistry should not alter the ratio η/π0, which is shown in Fig. 2, where theoretical predictions on the yield ratio of η/π0 in Pb+Pb at the LHC with different choices of jet transport coefficient q0 are presented
Summary
The quark-gluon plasma (QGP), a deconfined matter composed of quarks and gluons, is expected to be created in relativistic heavy-ion collisions (HIC). Jet quenching tells that when a fast parton passing through the hot/dense QCD medium it may suffer multiple scattering with other partons in the medium and lose a lot of energy, which may lead to the attenuation of leading hadrons [1, 2, 4,5,6,7], and medium modifications of jet productions and jet substructures [3, 8,9,10,11]. In this talk I review the recent progresses made by our group of jet quenching effect on leading hadron yields [12,13,14,15] as well as full jet observables [16,17,18] in high-energy nuclear collisions
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