Speaker
Description
Kaon pairs can be produced via photoproduction ($\gamma$-Pomeron) or photon-photon fusion ($\gamma\gamma$). A significant contribution to kaon pair production comes from the decay of scalar, tensor, and vector mesons. The study will provide a comprehensive description of dikaon production at both the elementary ($\gamma\gamma \to m \to K^+ K^-$) and nuclear ($Pb Pb \to Pb Pb K^+ K^-$) levels. The cross section for $\gamma\gamma$ fusion describes results from Belle, TPC/Two-Gamma and ARGUS experiments.
The latest ALICE data [1], which presents measurements of dikaon at midrapidity, unfortunately, does not provide experimental data for the dominant contribution, i.e. contribution from the decay of the $\phi(1020)$ meson. However, a Breit-Wigner distribution incorporating the decay of this resonance has been applied to describe the continuum component. This study aims to provide results across a broader range of kinematic variables and extend the analysis to additional decay channels.
The presentation will include a comparison of theoretical predictions with existing experimental data [1] (in midrapidity region), and provide predictions for the so-called forward range.
[1] ALICE Collaboration, S. Acharya et al., Phys.Rev.Lett. 132 (2024) 22, 222303
