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Report from Working Group 5: Future physics opportunities for high-density QCD at the LHC with heavy-ion and proton beams (2019)

Citron, Z. et al.; Guzey, V.; Helenius, I..; Paakkinen, P.; Paukkunen, H. (2019). Report from Working Group 5: Future physics opportunities for high-density QCD at the LHC with heavy-ion and proton beams. In Dainese, A.; Mangano, M.; Meyer, A. B.; Nisati, A.; Salam, G.; Vesterinen, M. (Eds.) Physics of the HL-LHC, and perspectives at the HE-LHC, CERN Yellow Reports: Monographs, 7/2019. CERN, 1159-1410. DOI: 10.23731/CYRM-2019-007.1159

JYU authors or editors

Publication details

All authors or editors: Citron, Z. et al.; Guzey, V.; Helenius, I..; Paakkinen, P.; Paukkunen, H.

Parent publication: Physics of the HL-LHC, and perspectives at the HE-LHC

Parent publication editors: Dainese, A.; Mangano, M.; Meyer, A. B.; Nisati, A.; Salam, G.; Vesterinen, M.

ISBN: 978-92-9083-549-3

Journal or series: CERN Yellow Reports: Monographs

ISSN: 2519-8068

eISSN: 2519-8076

Publication year: 2019

Number in series: 7/2019

Pages range: 1159-1410

Number of pages in the book: 1410

Publisher: CERN

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.23731/CYRM-2019-007.1159

Open Access: Publication published in an open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67072

Publication is parallel published: https://arxiv.org/abs/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, Q2) 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.

Free keywords: quantum chromodynamics; kinematics

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Related projects

Ministry reporting: Yes

Reporting Year: 2019

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