Production of strange particles in charged jets in p--Pb and Pb--Pb collisions measured with ALICE at the LHC

Zimmermann, Alice

doi:10.1088/1742-6596/805/1/012009

Article
Report number	arXiv:1502.01263
Title	Production of strange particles in charged jets in p--Pb and Pb--Pb collisions measured with ALICE at the LHC
Related title	Production of strange particles in charged jets in p--Pb and Pb--Pb collisions measured with ALICE at the LHC
Author(s)	Zimmermann, Alice (Heidelberg U.)
Collaboration	for the ALICE collaboration
Publication	2017-03-07
Imprint	04 Feb 2015
Number of pages	4
Note	Comments: 4 pages, 3 figures, HPT2014 proceedings 4 pages, 3 figures, HPT2014 proceedings
In:	J. Phys.: Conf. Ser. 805 (2017) 012009
In:	10th International Workshop on High-pT Physics in the RHIC/LHC era, Nantes, France, 9 - 12 Sep 2014, pp.012009
DOI	10.1088/1742-6596/805/1/012009
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ALICE
Abstract	Studies of jet production can provide information about the properties of the hot and dense strongly interacting matter created in ultra-relativistic heavy-ion collisions. Specifically, measurement of strange particles in jets may clarify the role of fragmentation processes in the anomalous baryon to meson ratio at intermediate particle pT that was observed in PbPb and, to a lesser extent, in pPb collisions. In this contribution, measurements of the pT spectra of Lambda and Antilambda baryons and K0s mesons produced in association with charged jets in PbPb collisions at sqrt(sNN)=2.76 TeV and pPb collisions at sqrt(sNN)=5.02 TeV are presented. The analysis is based on data which was recorded by ALICE at the LHC, exploiting its excellent particle identification capabilities. The baryon meson ratios of the spectra of strange particles associated with jets are studied for different event activities in p-Pb and are restricted to central events in PbPb. A comparison to the ratios obtained for inclusive particles and for particles stemming from the underlying event as well as to PYTHIA simulations is shown.
Copyright/License	arXiv nonexclusive-distrib. 1.0 publication: (License: cc-by)

$$\lmb$/$\kos$ ratio in jets for $\pTj$ > 10 $\gc$ (left) and $\pTj$ > 20 $\gc$ (right) measured in $\ppb$ collisions at $\snnpPb$ for events in the 0-10$\%$ V0A (determined by the VZERO-A detector) multiplicity class~\cite{aliceexperiment, Abelev:2014ffa}. Results of the ratio in jets are compared to the inclusive particle ratio (solid lines) and the expectation from a PYTHIA 8 4C simulation at 5.02 $\tc$ (dotted lines, showing spread for the used values of R).$