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A global extraction of the jet transport coefficient in cold nuclear matter
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abstract
Within the framework of the generalized QCD factorization formalism, we perform the first global analysis of the jet transport coefficient ($\hat q$) for cold nuclear matter. The analysis takes into account the world data on transverse momentum broadening in semi-inclusive electron-nucleus deep inelastic scattering, Drell-Yan dilepton and heavy quarkonium production in proton-nucleus collisions, as well as the nuclear modification of the structure functions in deep inelastic scattering, comprising a total of 215 data points from 8 data sets. For the first time, we clarify quantitatively the universality and probing scale dependence of the nuclear medium property as encoded in $\hat q$. We expect that the determined parametrization of $\hat q$ in cold nuclear matter will have significant impact on precise identification of the transport property of hot dense medium created in heavy ion collisions.
Forward citations
Cited by 2 Pith papers
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Unraveling the neutron skin thickness through jet charge in deep inelastic scattering
Jet charge distributions in electron-ion collisions are shown to be sensitive to neutron skin thickness, with peripheral collisions suppressing positive jets and enhancing negative jets.
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QGP@50: More than Four Decades of Jet Quenching
A historical and technical review of jet quenching in heavy-ion collisions, covering four decades of theory, the RHIC discovery, and modern Bayesian extractions of the jet transport parameter qhat.
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