Contribution Oral presentation
Double scattering production of two ρ0 mesons and four pions in ultraperipheral heavy ion collisions(remote)
We will discuss a possibility to study the $rho^0(770)$ mesons production in ultrarelativistic ultraperipheral heavy ion collisions. We evaluate for the first time differential distributions for exclusive production of two $rho^0(770)$ mesons (four charged pions) in the double scattering (photon-Pomeron) process . The results will be compared with the contribution of two-photon mechanism discussed previously in the literature . The double scattering mechanism populates large dimeson invariant masses and large rapidity distance between mesons. The resulting distributions for four pions will be presented and compared to the STAR data . Predictions for the LHC will be shown. We will discuss a possibility of identifying the double scattering mechanism at the LHC energy. The above analysis includes the smearing of $rho^0$ mass which was presented recently by the ALICE Collaboration .
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