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Improved background subtraction and a fresh look at jet sub-structure in JEWEL
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Improved background subtraction and a fresh look at jet sub-structure in JEWEL
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Interactions of hard partons in the Quark Gluon Plasma (QGP) created with relativistic heavy ion collisions lead to characteristic modifications of the internal structure of reconstructed jets. A large part of the observed jet sub-structure modifications stem from the QGP's response to energy and momentum deposited by hard partons. Good control over medium response in theoretical calculations is thus instrumental to a quantitative understanding of medium modified (quenched) jets in heavy ion collisions. We present an improved way of handling the medium response in the jet quenching model JEWEL and present results for a variety of jet sub-structure observables. The new recoil handling is more versatile and robust than the old scheme, giving a better control over many observables and, in particular, greatly improves the description of the jet mass.
Forward citations
Cited by 3 Pith papers
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Modification of jet-energy flow in heavy-ion collisions
ALICE measures the radial jet-energy flow observable Δp_T in Pb-Pb (5.02 TeV) and pp (13 TeV) collisions and reports narrowing of the energy distribution in heavy-ion collisions at 3.5-4.5σ significance.
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Jet quenching in out-of-equilibrium QCD matter
Medium-induced gluon radiation computed with kinetic-theory backgrounds shows a persistent, non-vanishing imprint of the pre-equilibrium stage on jet spectra, so jet observables can probe early-time dynamics in heavy-...
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A dynamical implementation of colour coherence for quenched jets in JEWEL
A per-interaction resolution check in JEWEL dynamically breaks colour coherence, suppressing hard radiation and reducing scattering rates in quenched jets.
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