2003/07/31 by Falk Meissner, F. Meißner, V. Morozov +1
Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Coulomb excitation #Coupling (piping) #Cross section (physics) #Electromagnetic field #Excitation #High-Energy Particle Collisions Research #Materials science #Momentum (technical analysis) #Nuclear physics #Nuclear physics research studies #Photon #Physics #Production (economics) #Quantum mechanics #Rapidity #nucl-ex
paper · pdf · doi:10.1016/s0920-5632(03)02308-9
published as Nucl.Phys.Proc.Suppl.126:59-64,2004 · Presentation at the 'International Conference on the Structure and Interactions of the Photon-Photon 2003, Frascati, Italy'; 6 pages, 8 figures Corrected references
arxiv created 2003/08/07 · openalex publication_date 2004/01/01 · arxiv updated 2019/08/13 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We report measurements for coherent rho0 production, AuAu->AuAu rho0, and coherent rho0 and e+e- pair production accompanied by mutual nuclear Coulomb excitation, AuAu->Au*Au* rho0 and AuAuee, in ultra-peripheral relativistic gold-gold collisions (UPC). We discuss transverse momentum, mass, and rapidity distributions. The two photon-process of e+e- pair production is an important probe of strong field QED because of the large coupling Z*alpha=0.6. At sqrts=200GeV, the e+e- production cross section agrees with lowest order QED calculations. The cross sections for coherent rho0 production at sqrts=130 and 200GeV are in agreement with theoretical predictions. The calculations for both, coherent e+e- and rho0 production treat nuclear excitation as independent process.