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002748813 0247_ $$2DOI$$9SISSA$$a10.22323/1.390.0046
002748813 037__ $$9arXiv$$aarXiv:2101.01971$$chep-ph
002748813 037__ $$9arXiv:reportnumber$$aCERN-TH-2021-006
002748813 035__ $$9arXiv$$aoai:arXiv.org:2101.01971
002748813 035__ $$9Inspire$$aoai:inspirehep.net:1839560$$d2023-01-30T12:01:18Z$$h2023-01-31T03:04:09Z$$mmarcxml$$ttrue$$uhttps://inspirehep.net/api/oai2d
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002748813 041__ $$aeng
002748813 100__ $$aWiedemann, Urs [email protected]$$uCERN$$vCERN, Geneva
002748813 245__ $$9arXiv$$aHIP and HEP
002748813 246__ $$9SISSA$$aHIP and HEP
002748813 269__ $$c2021-01-06
002748813 260__ $$bSISSA$$c2021-04-15
002748813 300__ $$a10 p
002748813 500__ $$9arXiv$$a10 pages, 7 figures
002748813 520__ $$9arXiv$$aThis write-up of the ICHEP plenary "Heavy Ions - theory" focusses on some recent LHC discoveries and future opportunities in heavy ion physics (HIP) that are at the intersection with high energy physics (HEP).
002748813 520__ $$9SISSA$$aThis write-up of the ICHEP plenary ``Heavy Ions - theory'' focusses on some recent LHC discoveries and future opportunities in heavy ion physics (HIP) that are at the intersection with high energy physics (HEP).
002748813 540__ $$3preprint$$aCC-BY-4.0$$uhttp://creativecommons.org/licenses/by/4.0/
002748813 540__ $$3publication$$aCC-BY-NC-ND-4.0$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/
002748813 542__ $$3publication$$dThe author(s)$$g2021
002748813 595__ $$aCERN-TH
002748813 65017 $$2arXiv$$ahep-ph
002748813 65017 $$2SzGeCERN$$aParticle Physics - Phenomenology
002748813 690C_ $$aCERN
002748813 690C_ $$aARTICLE
002748813 773__ $$01859861$$c046$$pPoS$$vICHEP2020$$wC20-07-30$$y2021
002748813 8564_ $$82272061$$s459051$$uhttp://cds.cern.ch/record/2748813/files/SherpaPP.png$$y00000 Left: Schematic view of the physics implemented in standard multi-purpose event generators for proton-proton collisions. Right: CMS event display of the calorimeter deposition of more than 10'000 particles produced in a single, sufficiently central 2.76 TeV PbPb collision (plot from G. Roland, private communication). The physics mechanisms sketched on the left cannot account for the azimuthal asymmetry of the calorimetric distribution displayed on the right.
002748813 8564_ $$82272062$$s3228$$uhttp://cds.cern.ch/record/2748813/files/omega_AdS.png$$y00002 Four sketches of the non-analytic structures (poles and branch-cuts) of the retarded propagator of the energy momentum tensor in different plasmas. These structures are in one-to-one correspondence with the physical degrees of freedom operational in the plasma. Hydrodynamic excitations (blue) are a common feature of all Lorentz symmetric theories with self-interactions. Non-hydrodynamic excitations depend on the nature of the plasma and could include quasi-normal modes (AdS/CFT), non-propagating dissipative excitations (Israel-Stewart hydro) or particle-like excitations represented by a branch cut (kinetic theory). Discriminating between these possibilities is tantamount to establishing the microscopic structure of the plasma. Figure taken from~\cite{Kurkela:2018ygx}.
002748813 8564_ $$82272063$$s3153$$uhttp://cds.cern.ch/record/2748813/files/omega_IS.png$$y00004 Four sketches of the non-analytic structures (poles and branch-cuts) of the retarded propagator of the energy momentum tensor in different plasmas. These structures are in one-to-one correspondence with the physical degrees of freedom operational in the plasma. Hydrodynamic excitations (blue) are a common feature of all Lorentz symmetric theories with self-interactions. Non-hydrodynamic excitations depend on the nature of the plasma and could include quasi-normal modes (AdS/CFT), non-propagating dissipative excitations (Israel-Stewart hydro) or particle-like excitations represented by a branch cut (kinetic theory). Discriminating between these possibilities is tantamount to establishing the microscopic structure of the plasma. Figure taken from~\cite{Kurkela:2018ygx}.
002748813 8564_ $$82272064$$s2923$$uhttp://cds.cern.ch/record/2748813/files/omega_QCD.png$$y00005 Four sketches of the non-analytic structures (poles and branch-cuts) of the retarded propagator of the energy momentum tensor in different plasmas. These structures are in one-to-one correspondence with the physical degrees of freedom operational in the plasma. Hydrodynamic excitations (blue) are a common feature of all Lorentz symmetric theories with self-interactions. Non-hydrodynamic excitations depend on the nature of the plasma and could include quasi-normal modes (AdS/CFT), non-propagating dissipative excitations (Israel-Stewart hydro) or particle-like excitations represented by a branch cut (kinetic theory). Discriminating between these possibilities is tantamount to establishing the microscopic structure of the plasma. Figure taken from~\cite{Kurkela:2018ygx}.
002748813 8564_ $$82272065$$s19313$$uhttp://cds.cern.ch/record/2748813/files/plotOO.png$$y00006 For the hadronic nuclear modification factor $R_{\mathrm{AA}}^{h}\left(p_{\perp}, y\right)=\frac{1}{A^{2}} \frac{d \sigma_{\mathrm{AA}}^{h} / d y d p_{\perp}^{2}}{d \sigma_{p p}^{h} / d y d p_{\perp}^{2}}$ in inclusive oxygen-oxygen collisions, systematic uncertainties in the no-jet quenching baseline (red band) are very small and can be fully quantified in NLO perturbative QCD. For small collision systems where jet quenching has escaped unambiguous detection so far, this nuclear modification factor provides currently the highest sensitivity for future searches. Essentially all jet quenching models (blue bands) can be separated from the null-hypothesis in a short OO run. Figure taken from~\cite{Huss:2020whe}.
002748813 8564_ $$82272066$$s2863$$uhttp://cds.cern.ch/record/2748813/files/omega_RTA.png$$y00003 Four sketches of the non-analytic structures (poles and branch-cuts) of the retarded propagator of the energy momentum tensor in different plasmas. These structures are in one-to-one correspondence with the physical degrees of freedom operational in the plasma. Hydrodynamic excitations (blue) are a common feature of all Lorentz symmetric theories with self-interactions. Non-hydrodynamic excitations depend on the nature of the plasma and could include quasi-normal modes (AdS/CFT), non-propagating dissipative excitations (Israel-Stewart hydro) or particle-like excitations represented by a branch cut (kinetic theory). Discriminating between these possibilities is tantamount to establishing the microscopic structure of the plasma. Figure taken from~\cite{Kurkela:2018ygx}.
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002748813 8564_ $$82272068$$s171084$$uhttp://cds.cern.ch/record/2748813/files/CMSasym2.png$$y00001 Left: Schematic view of the physics implemented in standard multi-purpose event generators for proton-proton collisions. Right: CMS event display of the calorimeter deposition of more than 10'000 particles produced in a single, sufficiently central 2.76 TeV PbPb collision (plot from G. Roland, private communication). The physics mechanisms sketched on the left cannot account for the azimuthal asymmetry of the calorimetric distribution displayed on the right.
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