Predictions of the Generalized Glauber Model for the coherent $ρ$-production at RHIC and the STAR data

Details Predictions of the Generalized Glauber Model for the coherent $ρ$-production at RHIC and the STAR data Predictions of the Generalized Glauber Model for the coherent $ρ$-production at RHIC and the STAR data

2002-10-23

arxiv.org/abs/hep-ph/0210303v3

Phys.Rev.C67:034901,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

a typo after Eq.6 is corrected

Scientific paper

10.1103/PhysRevC.67.034901

We calculate the rapidity distribution and the total cross section of coherent and incoherent $\rho$-production in the heavy ion ultraperipheral collisions (UPC) at $\surd s_{NN}=130$ GeV using the generalized vector dominance model(GVDM) and the Gribov- Glauber approach. We find the coherent cross section of $\rho $-production $\sigma_{coh}=490$ mb compared to the $\sigma_{coh}=370\pm 170\pm 80$ mb recently reported by the STAR collaboration at RHIC. The predicted cross section inside the acceptance of the experiment, $|y|\le 1$, agrees with the data. It is emphasized that measurements of the rapidity distribution will provide a much more stringent test of the model.

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