Speaker
Xiaoming Zhang
(Lawrence Berkeley National Lab. (US))
Description
Properties of the hot and dense strongly interacting matter created in
ultra-relativistic heavy-ion collisions can be studied using jets.
Hadronization processes occurring in jets are expected to be modified by
the interaction of partons with the medium.
At intermediate $p_{\rm T}$, a strong increase of the baryon/meson ratio
is observed for inclusive light particles produced in heavy-ion
collisions when compared to the ratio measured in proton-proton
collisions. Production by fragmentation cannot explain this phenomenon and
other hadronization mechanisms, like coalescence or parton recombination,
have been proposed instead. Measurements of spectra of identified
particles produced in jets in heavy-ion collisions will provide further
important insights into the interplay of hadronization processes which
participate in the jet fragmentation in a medium dominated by the strong
interaction under high temperatures and high energy densities.
In this talk, we present the first measurements of the $p_{\rm T}$ spectra
of $\Lambda$ and $\overline{\Lambda}$ baryons and $\rm{K_s^0}$ mesons
produced in association with charged jets in Pb-Pb collisions at
$\sqrt{s_{\rm NN}}=2.76$ TeV and p-Pb collisions at $\sqrt{s_{\rm
NN}}=5.02$ TeV measured by ALICE at the LHC, exploiting the excellent
particle identification capabilities of this experiment. Baryon/meson
ratios of the spectra of strange particles associated with jets are
studied as a function of centrality and are compared to the ratios
obtained for inclusive particles and for particles coming from the
underlying event
| On behalf of collaboration: | ALICE |
|---|
Author
Xiaoming Zhang
(Lawrence Berkeley National Lab. (US))
