Abstract
Measurements of spectra of identified particles produced in jets represent an important tool for understanding the interplay of various hadronisation mechanisms which contribute to particle production in the hot and dense medium created in ultra-relativistic heavy-ion collisions. In this contribution, we present the measurements of the pT spectra of Λ baryons and KS0 mesons produced in charged jets in Pb–Pb collisions at sNN=2.76 TeV and in p–Pb collisions at sNN=5.02 TeV. The results are obtained with the ALICE detector at the LHC, exploiting the excellent particle identification capabilities of this experiment. Baryon-to-meson ratios of the spectra of strange particles associated with jets are studied in central collisions and are compared with the inclusive ratios.
Highlights
An enhancement of the baryon-to-meson ratio has been observed for inclusive production of lightflavour particles at intermediate transverse momenta (2 GeV/c < pT < 6 GeV/c) in heavy-ion collisions when compared to the ratio measured in proton–proton collisions
The measured baryon-tomeson ratio in jets in p–Pb collisions is below the inclusive ratio i) measured in p–Pb collisions, ii) measured in pp collisions [16] and iii) obtained with PYTHIA simulations
We described techniques used in the analysis of the Λ/K0S ratio in charged jets
Summary
An enhancement of the baryon-to-meson ratio has been observed for inclusive production of lightflavour particles at intermediate transverse momenta (2 GeV/c < pT < 6 GeV/c) in heavy-ion collisions when compared to the ratio measured in proton–proton (pp) collisions. The process might be sensitive to interactions of fragmenting partons with the stronglyinteracting matter created in ultra-relativistic heavy-ion collisions. Such interaction might modify properties of the resulting jet, including pT spectra of the hadrons which constitute the jet. V. Kucera (ALICE Collaboration) / Nuclear Physics B Proceedings Supplement 00 (2015) 1–4 duced in association with hard processes and hadrons produced in the bulk. Kucera (ALICE Collaboration) / Nuclear Physics B Proceedings Supplement 00 (2015) 1–4 duced in association with hard processes and hadrons produced in the bulk The results of this analysis aim to disentangle contributions of processes in bulk and potential contribution of modified jet fragmentation in medium
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