Hadronic resonances, with lifetimes comparable to the duration of the hadronic phase, can be used as effective probes to study the properties of the hadronic phase, created in the final stage of heavy-ion collisions. Exploring the dynamics of the hadronic phase reveals the role of rescattering and regeneration in resonance production. Yield ratios of resonances to long-lived stable particles across multiplicities provide insights into hadronic interactions and system evolution. This contribution presents ALICE results on mesonic and baryonic resonances obtained from Run 2 data taking at LHC energies, focusing on K \(^{*\pm }(892)\) , \(\mathrm \varLambda (1520)\) , \(\mathrm \varSigma ^{\pm }(1385)\) , \(\mathrm \varXi ^{0}(1530)\) , and \(\mathrm \phi (1020)\) . Key measurements include transverse momentum ( \(p_\textrm{T}\) ) spectra, \(p_\textrm{T}\) -integrated yields, and resonance-to-stable particle yield ratios. Results are compared with theoretical models to explore hadronic phase dynamics.

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Investigating the Hadronic Phase Dynamics via Resonance Studies with ALICE at LHC Energies

  • Sonali Padhan

摘要

Hadronic resonances, with lifetimes comparable to the duration of the hadronic phase, can be used as effective probes to study the properties of the hadronic phase, created in the final stage of heavy-ion collisions. Exploring the dynamics of the hadronic phase reveals the role of rescattering and regeneration in resonance production. Yield ratios of resonances to long-lived stable particles across multiplicities provide insights into hadronic interactions and system evolution. This contribution presents ALICE results on mesonic and baryonic resonances obtained from Run 2 data taking at LHC energies, focusing on K \(^{*\pm }(892)\) , \(\mathrm \varLambda (1520)\) , \(\mathrm \varSigma ^{\pm }(1385)\) , \(\mathrm \varXi ^{0}(1530)\) , and \(\mathrm \phi (1020)\) . Key measurements include transverse momentum ( \(p_\textrm{T}\) ) spectra, \(p_\textrm{T}\) -integrated yields, and resonance-to-stable particle yield ratios. Results are compared with theoretical models to explore hadronic phase dynamics.