Coherent ρ⁰ production in ultraperipheral heavy-ion collisions
Journal Article
·
· Physical Review Letters
The STAR Collaboration reports the first observation of exclusive ρ⁰ photoproduction, AuAu→AuAuρ⁰, and ρ⁰ production accompanied by mutual nuclear Coulomb excitation, AuAu→Au*Au*ρ⁰, in ultraperipheral heavy-ion collisions. The ρ0 have low transverse momenta, consistent with coherent coupling to both nuclei. The cross sections at √(sNN)=130 GeV agree with theoretical predictions treating ρ⁰ production and Coulomb excitation as independent processes.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics (US)
- Contributing Organization:
- STAR Collaboration
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 808939
- Report Number(s):
- LBNL-51952; PRLTAO; R&D Project: NRNC; B& R KB0201022; TRN: US0302369
- Journal Information:
- Physical Review Letters, Vol. 89, Issue 27; Other Information: Journal Publication Date: 30 December 2002; PBD: 7 Jun 2002; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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