Conveners
Monte Carlo models
- Minjung Kim (University of California Berkeley (US))
- Cyrille Marquet (CPHT - Ecole Polytechnique)
Monte Carlo models
- Carlos Bertulani (Texas A&M University-Commece)
- Jaroslav Adam (Czech Technical University in Prague (CZ))
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David d'Enterria (CERN)15/12/2023, 09:00Session 6: MC and UPCs
The automated generation of arbitrary exclusive final states produced via photon fusion in ultraperipheral high-energy collisions of protons and/or nuclei, A B \to A X B, is implemented in the MadGraph5_aMC@NLO and HELAC-Onia Monte Carlo codes. Cross sections are calculated in the equivalent photon approximation using γ fluxes derived from electric dipole and charge form factors, and...
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Dr Ilkka Helenius (University of Jyväskylä)15/12/2023, 09:30Session 6: MC and UPCs
Ultraperipheral heavy-ion collisions provide the first opportunity to study collisions between photons and heavy ions in high-energy colliders. The quasi-real photons emitted by the nuclei may fluctuate into a hadronic state and in fact this hadronic contribution will provide the bulk of the photon-hadron cross section. In case of a heavy-ion target the partonic structure of these resolved...
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Dr Fernando Navarra (University of São Paulo, Brazil)15/12/2023, 10:00Session 2: Two-photon physics
In this talk I will address two topics. First I will discuss the production
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of pions at very large rapidities (y > 7) in p-Pb and Pb-Pb collisions at the
LHC. These pions are produced through the magnetic excitation of nucleons in
the target due to the strong magnetic field generated by the projectile, i.e.,
N -> Delta -> N' pion. This process has a very large cross section and can
be... -
Joakim Nystrand (University of Bergen (NO))15/12/2023, 11:00Session 6: MC and UPCs
The STARlight Monte Carlo calculates cross sections and generates events for a variety of ultra-peripheral collisions. In particular two-photon production of dilepton pairs and single mesons, and photonuclear production of vector mesons. The collision geometry plays a major role in these interactions, and the photon spectrum is thus calculated in impact parameter space. The photonuclear vector...
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Yajin Zhou (Shandong University, China)15/12/2023, 11:30Session 5: EM and peripheral events
The coherent photons induced by relativistic heavy ions are highly linearly polarized, in close analogy to the linear polarization of gluons in a large nucleus. We proposed to measure the photon polarization through azimuthal asymmetries in dilepton production in ultraperipheral collisions. Our prediction for the asymmetries were soon confirmed by the STAR experiment with high precision. We...
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Daniel Tapia Takaki (University of Kansas)15/12/2023, 12:00
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15/12/2023, 12:15
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Michal Broz (Czech Technical University in Prague (CZ))Session 6: MC and UPCs
The study of photon-induced reactions in collisions of heavy nuclei at RHIC and the LHC has become an important direction of the research program of these facilities in recent years. In particular, the production of vector mesons in ultra-peripheral collisions (UPC) has been intensively studied. Owing to the intense photon fluxes, the two nuclei participating in such processes undergo...
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