Abstract
Hadronic resonances, thanks to their relatively short lifetimes, can be used to probe the properties of the hadronic phase in ultrarelativistic heavyion collisions. In particular their lifetimes are exploited to investigate the interplay between particle rescattering and regeneration after hadronization. In this contribution we present recent results on ρ(770)0, K*(892), ϕ(1020), Σ(1385)±, Ξ (1530)0 and Λ(1520) production in pp, p–Pb, Pb–Pb and Xe–Xe collisions at LHC energies.
Highlights
Production properties of hadronic resonances and their comparison with those of stable hadrons are useful tools to understand the properties of the strongly-interacting matter formed in relativistic nucleus-nucleus collisions
We present recent results obtained by ALICE for the mesonic resonances (ρ(770)0, K(892)∗0 and φ(1020)) and baryonic resonances (Σ(1385)±, Ξ(1530)0 and Λ(1520)) in pp, p–Pb, Pb–Pb and Xe–Xe collisions at various centre-of-mass collision energies
The minimum-bias spectra have been normalized to the fraction of non-single diffractive (NSD)
Summary
Production properties of hadronic resonances and their comparison with those of stable hadrons are useful tools to understand the properties of the strongly-interacting matter formed in relativistic nucleus-nucleus collisions Due to their short lifetimes (comparable to the lifetime of the hadronic phase [1]), resonances provide an insight into the dynamical evolution of the fireball. The estimated yield of the resonances may be modified even after the chemical freezeout due to (pseudo)-elastic rescattering or regeneration of their decay daughters. These processes are dominant at low pT ( 2 GeV/c) [2–4]. The particles ρ(770)0 , K(892)∗0 , φ(1020), Σ(1385)± and Ξ(1530)0 will be represented by ρ0 , K∗0 , φ, Σ± and Ξ0 respectively
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