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arXiv · 1809.03823

Importance of mesons in light-by-light scattering in ultraperipheral lead-lead collisions at the LHC

Mariola Klusek-Gawenda
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Abstract

Possibility of PbPb$\to$PbPb$\gamma\gamma$ measurement at smaller (< 5 GeV) diphoton invariant mass will be presented. Analysis focuses only on ultraperipheral heavy-ion collisions. This estimate shows that the $\gamma \gamma \to \gamma \gamma$ collisions can be measured at the LHC by ALICE and LHCb experiments for diphoton invariant mass $>$ 2 GeV. Predictions for the $\gamma\gamma \to \eta, \eta' \to \gamma\gamma$ resonance scattering shows that these resonances can be measured with rather good statistics. A~possible observation of peaks related to intermediate $\eta$, $\eta'(958)$, $\eta_c(1S)$, $\eta_c(2S)$, $\chi_{c0}(1P)$ mesons will be presented too. Attempts of reduction of background which comes from dipion production will be considered.

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Mariola Klusek-Gawenda. 2018-09-11. Importance of mesons in light-by-light scattering in ultraperipheral lead-lead collisions at the LHC. https://doi.org/10.1051/epjconf%2F201919905004

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