Speaker
Description
The investigation of light hadrons in UPCs is of great interest for QCD studies. ALICE is a superb detector for studying these processes because of its excellent particle identification and tracking capabilities. The measured cross section of coherent $\rho^{0}$ mesons in photon-lead interactions has been found to be about 40% smaller than what is predicted by the Glauber model, and expectations from photon-proton interactions, indicating the importance of high-mass intermediate states in the process of $\rho^{0}$ scattering off nuclei. In this talk, we will review the status of the coherent $\rho^{0}$ meson analysis, and present the first study of the photoproduction of the two-kaon final state channel in UPCs, which could originate from the decay of the $\phi$ meson or from direct production. ALICE can also study four-prong states which are interesting for spectroscopy and excited resonance searches. In this talk, we will discuss new results on exclusive four-pion states.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE |
