Orateur
Description
Collective effects similar to those in Pb-Pb collisions have been observed in smaller systems, such as pp and p-Pb collisions. Among these is the increase of the strange to non-strange hadron ratio with charged-particle multiplicity density. Understanding these effects requires a detailed description of the production mechanisms of strange hadrons, which is obscured by large uncertainties in the gluon-initiated particle shower and hadronisation models. Much of our knowledge of particle showers is based on results from 𝑒+𝑒− collisions, which is sensitive to quark-initated fragmentation patterns, but leaves gluon fragmentation poorly constrained. By studying the production of strange hadrons in hadronic collisions, which are rich in gluon-initiated final states, we can probe these mechanisms and, using data from p-Pb collisions, we can disentangle the contributions in jets from those of the bulk.
In this talk, we present published results on the production of K$^0_{\rm S}$, Λ($\bar{\rm{\Lambda}}$), Ξ± and Ω± hadrons in charged-particle jets and the underlying event in pp and p-Pb collisions with ALICE.
In addition, we show a novel measurement of jet fragmentation into Λ and K$^0_{\rm S}$ hadrons in pp collisions at $\sqrt{s}$=13.6 TeV with ALICE.
