Speaker
Description
Resonances are useful tools to study the properties of the hadronic medium produced in high energy heavy-ion collisions, due to their short lifetime. They are good candidates to probe the interplay of particle re-scattering and regeneration in the hadronic phase. In particular, the K$^{*}(892)^{\pm}$ resonances are important because of their very short lifetimes ($\sim$ 4 fm/$\it c$) which are comparable to that of the fireball. The K$^{*\pm}$ is reconstructed via a two-step decay process: the resonance undergoes a strong decay to K$^{0}_{S}$ + $\pi^{\pm}$ and then the K$^{0}_{S}$ decays weakly to $\pi^{+}$ + $\pi^{-}$. Measurements in pp collisions constitute a reference for the measurements in p-Pb and Pb-Pb collisions at the same center-of-mass energy and contribute to the study of the energy and multiplicity dependence of particle production in pp collisions. The results presented here include the transverse momentum ($\it p_{\rm T}$) spectra, integrated yields and $\langle p_{\rm T} \rangle$ for K$^{*\pm}$ in pp collisions at $\sqrt{s}$ = 5.02 and 8 TeV. The results are compared to the measured production of neutral K$^{*}(892)$ and with the predictions from commonly used QCD-inspired event generators.
| Content type | Experiment |
|---|---|
| Collaboration | ALICE |
| Centralised submission by Collaboration | Presenter name already specified |
