Electromagnetic processes with quasireal photons in Pb plus Pb collisions: QED, QCD, and the QGP
- NázevTitle
- Electromagnetic processes with quasireal photons in Pb plus Pb collisions: QED, QCD, and the QGPElectromagnetic processes with quasireal photons in Pb plus Pb collisions: QED, QCD, and the QGP
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- P. Steinberg, M. Aaboud, G. Aad, B. Abbott, B. Ali, K. Augsten, D. Caforio, P. Gallus, M. Havránek, Z. Hubáček, M. Myška, R. Novotný, S. Pospíšil, T. Slavíček, K. Smolek, M. Solar, A. Sopczak, M. Suk, V. Vacek, P. Vokáč, V. Vrba
- DOIDOI
- 10.1016/j.nuclphysa.2018.10.087
- Časopis / citaceJournal / citation
- Nuclear Physics A. 2019, 982 259-262. ISSN 0375-9474.
- RokYear
- 2019
- JazykLanguage
- eng
- WoSWoS
- 000457515500050
- ScopusScopus
- 2-s2.0-85060167400
- RIVRIV
- ProjektProject
- Získávání nových poznatků o mikrosvětě v infrastruktuře CERNAcquiring new pieces of knowledge about micro-world in CERN research infrastructure
AbstraktAbstract
Electromagnetic processes, both photon-photon and photon-nucleus, are shown to be useful in studying aspects of QED, QCD, and potentially the QGP. Using lead-lead collisions at root s(NN) = 5.02 TeV, the ATLAS detector has performed measurements of exclusive dimuon production, light-by-light scattering (via exclusive diphoton production), and photo-nuclear dijet production. These are all important examples of ultraperipheral collisions, where the nuclei do not interact hadronically. A recent study of the opening angles of dimuons produced in hadronic heavy-ion collisions, after subtracting heavy-flavor backgrounds, demonstrates that the dimuons carry information correlated with the overlap geometry, potentially about the density of charges in the QGP itself.
Electromagnetic processes, both photon-photon and photon-nucleus, are shown to be useful in studying aspects of QED, QCD, and potentially the QGP. Using lead-lead collisions at root s(NN) = 5.02 TeV, the ATLAS detector has performed measurements of exclusive dimuon production, light-by-light scattering (via exclusive diphoton production), and photo-nuclear dijet production. These are all important examples of ultraperipheral collisions, where the nuclei do not interact hadronically. A recent study of the opening angles of dimuons produced in hadronic heavy-ion collisions, after subtracting heavy-flavor backgrounds, demonstrates that the dimuons carry information correlated with the overlap geometry, potentially about the density of charges in the QGP itself.