dc.contributor.author STAR CollaborationEppley, G.Geurts, F.Liu, J.Llope, W.J.McDonald, D.Roberts, J.B.Yepes, P. 2015-05-05T17:27:52Z 2015-05-05T17:27:52Z 2012 STAR Collaboration, Eppley, G., Geurts, F., et al.. "ρ0 photoproduction in AuAu collisions at √sNN=62.4 GeV measured with the STAR detector." Physical Review C, 85, no. 1 (2012) 14910. http://dx.doi.org/10.1103/PhysRevC.85.014910. https://hdl.handle.net/1911/80189 Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. The STAR Collaboration has previously presented measurements of coherent ρ0 photoproduction at center of mass energies of 130 GeV and 200 GeV in AuAu collisions. Here, we present a measurement of the cross section at 62.4 GeV; we find that the cross section for coherent ρ0 photoproduction with nuclear breakup is 10.5±1.5±1.6 mb at 62.4 GeV. The cross-section ratio between 200 GeV and 62.4 GeV is 4.4±0.6, less than is predicted by most theoretical models. It is, however, proportionally much larger than the previously observed 15%±55% increase between 130 GeV and 200 GeV. eng Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. ρ0 photoproduction in AuAu collisions at √sNN=62.4 GeV measured with the STAR detector Journal article Physical Review C 85 1 American Physical Society Text http://dx.doi.org/10.1103/PhysRevC.85.014910 publisher version 14910
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