Electromagnetic processes with quasireal photons in Pb+Pb collisions: QED, QCD, and the QGPVisa övriga samt affilieringar
Antal upphovsmän: 29192019 (Engelska)Ingår i: Nuclear Physics A, ISSN 0375-9474, E-ISSN 1873-1554, Vol. 982, s. 259-262Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
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.
Ort, förlag, år, upplaga, sidor
2019. Vol. 982, s. 259-262
Nationell ämneskategori
Subatomär fysik
Identifikatorer
URN: urn:nbn:se:uu:diva-378199DOI: 10.1016/j.nuclphysa.2018.10.087ISI: 000457515500050OAI: oai:DiVA.org:uu-378199DiVA, id: diva2:1294219
Konferens
XXVIIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018)
Anmärkning
For complete list of authors see http://dx.doi.org/10.1016/j.nuclphysa.2018.10.087
2019-03-062019-03-062019-03-06Bibliografiskt granskad