Coherent rho0 production in ultraperipheral heavy ion collisions
Jun, 2002Citations per year
Abstract:
The STAR collaboration reports the first observation of exclusive rho^0 photo-production, AuAu->AuAu rho^0, and rho^0 production accompanied by mutual nuclear Coulomb excitation, AuAu->Au*Au*rho^0, in ultra-peripheral heavy-ion collisions. The rho^0 have low transverse momenta, consistent with coherent coupling to both nuclei. The cross sections at sqrt(s_NN)=130GeV agree with theoretical predictions treating rho^0 production and Coulomb excitation as independent processes.Note:
- 6 pages, 5 figures, 2 tables, submitted to Phys. Rev. Lett updated version, one new figure and table
- nucleus nucleus: colliding beams
- scattering: heavy ion
- gold
- nuclear reaction: peripheral
- coherent interaction
- rho(770)0: photoproduction
- rho(770)0: hadronic decay
- excited nucleus
- transverse momentum: spectrum
- rapidity spectrum
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