Coherent vector meson production in ultra-peripheral heavy-ion collisions at STAR
Abstract
We report the first observation of coherent rho0 production (AuAu->AuAu rho0) and rho0 production accompanied by mutual nuclear Coulomb excitation (AuAu->Au*Au*rho0),and the observation of coherent e+e- pair production (AuAu->Au*Au*e+e-) in ultra-peripheral relativistic heavy-ion collisions (UPCs). We give transverse momentum, mass, and rapidity distributions. The cross sections for coherent rho0 production at sqrt{s_NN}=130 and 200 GeV are in agreement with theoretical predictions, which treat rho^0 production and nuclear excitation as independent processes.
- Publication:
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Nuclear Physics A
- Pub Date:
- March 2003
- DOI:
- arXiv:
- arXiv:nucl-ex/0210028
- Bibcode:
- 2003NuPhA.715..522M
- Keywords:
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- Nuclear Experiment
- E-Print:
- 4 pages, 4 figures, Talk presented at Quark Matter 2002, Nantes, France, July 2002