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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.19363 |
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Table of Contents:
- The study of chiral partners such as $\rm{K_1}$ and $\rm{K^*}$ mesons, which have vacuum widths below 100 MeV, provides an opportunity to explore chiral symmetry restoration in heavy-ion collisions. A recent theoretical model suggests that the $\rm{K_1/K^*}$ ratio in heavy-ion collisions should be significantly larger than that predicted by the statistical hadronisation model. Investigating the $\rm{K_1/K^*}$ ratio as a function of multiplicity across various collision systems, from pp to central heavy-ion collisions, can shed light on the impact of chiral symmetry restoration. However, the $\rm{K_1}$ meson has yet to be observed in hadron-hadron collisions. The ALICE detector's advanced particle identification capabilities enable the measurement of the $\rm{K_1}$ meson through hadronic decay modes, such as $\rm{K_{1}^{-} \rightarrow ρ^{0}K^{-}}$ and $\rm{K_{1}^{-} \rightarrow π^{-}\bar{K}^{*0}}$. This presentation discusses the feasibility of measuring $\rm{K_1}$ mesons in pp collisions using the ALICE experiment.