Ultra-peripheral collisions of relativistic heavy ions

Conference · Mon Jan 01 00:00:00 EST 2001

OSTI ID:787163

Klein, S

We report the first observation of exclusive {rho} production in ultra-peripheral collisions at RHIC. The {rho} are produced electromagnetically at large impact parameters where no hadronic interactions occur. The produced {rho} have a small perpendicular momentum, consistent with production that is coherent on both the photon emitting and scattering nuclei. We observe both exclusive {rho} production, and {rho} production accompanied by electromagnetic dissociation of both nuclei. We discuss models of vector meson production and the correlation with nuclear breakup. We also observe e{sup +}e{sup -} pair production in these ultra-peripheral collisions.

• 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)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 787163
• Report Number(s): LBNL-48775; R&D Project: NRNC; TRN: US0110437
• Resource Relation: Conference: International Nuclear Physics Conference, Berkeley, CA (US), 07/30/2001--08/03/2001; Other Information: PBD: 1 Jan 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DISSOCIATION
HEAVY IONS
IMPACT PARAMETER
PAIR PRODUCTION
PHOTONS
SCATTERING
VECTOR MESONS
EXCLUSIVE INTERACTIONS
BROOKHAVEN RHIC
BREAKUP REACTIONS
ELECTRONS
POSITRONS