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| Book/Report | GSI-2020-00281 |
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2019
CERN
Geneva
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Please use a persistent id in citations: doi:10.23731/CYRM-2019-007.1159 doi:10.15120/GSI-2020-00281
Report No.: CERN-LPCC-2018-07; arXiv:1812.06772
Abstract: The future opportunities for high-density QCD studies with ion and proton beams at the LHC are presented. Four major scientific goals are identified: the characterisation of the macroscopic long wavelength Quark-Gluon Plasma (QGP) properties with unprecedented precision, the investigation of the microscopic parton dynamics underlying QGP properties, the development of a unified picture of particle production and QCD dynamics from small (pp) to large (nucleus--nucleus) systems, the exploration of parton densities in nuclei in a broad ($x$, $Q^2$) kinematic range and the search for the possible onset of parton saturation. In order to address these scientific goals, high-luminosity Pb-Pb and p-Pb programmes are considered as priorities for Runs 3 and 4, complemented by high-multiplicity studies in pp collisions and a short run with oxygen ions. High-luminosity runs with intermediate-mass nuclei, for example Ar or Kr, are considered as an appealing case for extending the heavy-ion programme at the LHC beyond Run 4. The potential of the High-Energy LHC to probe QCD matter with newly-available observables, at twice larger center-of-mass energies than the LHC, is investigated.
Keyword(s): p: beam ; quantum chromodynamics: matter ; parton: saturation ; parton: density ; quark gluon: plasma ; oxygen: ion ; p p: scattering ; interpretation of experiments: CERN LHC Coll ; heavy ion ; nucleus ; kinematics
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