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- Bierlich, Christian
(författare)
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Forbundne atomer holder tiden
- 2021
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Ingår i: Illustreret Videnskab. - 0109-2456. ; 2021:15
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Tidskriftsartikel (populärvet., debatt m.m.)
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| 3. |
- Bierlich, Christian
(författare)
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Multiparton interactions and underlying event : A PYTHIA perspective
- 2021
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Ingår i: 0th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, HardProbes 2020. - Trieste, Italy : Sissa Medialab. - 1824-8039. ; 387
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Konferensbidrag (refereegranskat)abstract
- We review recent developments in PYTHIA8, focused on heavy ion collisions. The ANGANTYR framework for heavy ion collisions is presented, as well as recent developments of the string shoving model for flow. It is further shown how string shoving can affect jet fragmentation in pp collisions. The effect of adding hadronic rescattering is reviewed, with focus on the nuclear modification factor, and finally ongoing work towards extending the PYTHIA8 and ANGANTYR MPI models to eletron-ion collisions is presented.
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- Utheim, Marius, et al.
(författare)
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Hadronic rescattering in pA and AA collisions
- 2021
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Ingår i: European Physical Journal A. - : Springer Science and Business Media LLC. - 1434-601X .- 1434-6001.
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Tidskriftsartikel (refereegranskat)abstract
- In a recent article we presented a model for hadronic rescattering, and some results were shown for pp collisions at LHC energies. In order to extend the studies to pA and AA collisions, the Angantyr model for heavy-ion collisions is taken as the starting point. Both these models are implemented within the general-purpose Monte Carlo event generator Pythia, which makes the matching reasonably straightforward, and allows for detailed studies of the full space–time evolution. The rescattering rate is significantly higher than in pp, especially for central AA collisions, where the typical primary hadron rescatters several times. We study the impact of rescattering on a number of distributions, such as $p_\perp$ and $\eta$ spectra, and the space–time evolution of the whole collision process. Notably rescattering is shown to give a significant contribution to elliptic flow in XeXe and PbPb, and to give a nontrivial impact on charm production.
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