Speaker
Stefania Bufalino
(Universita e INFN Torino (IT))
Description
The main goal of the ALICE experiment at the LHC is to study the properties of the deconfined state of matter known as the Quark-Gluon Plasma (QGP), created in ultrarelativistic heavy ion collisions. In this context, strangeness and light flavor observables help for the characterization of the bulk properties of the QGP.
Thanks to its unique detector design, the ALICE experiment can identify hadrons in a wide
momentum range by employing different detection systems and techniques.
The transverse momentum spectra of primary charged ($\pi^{\pm}$, K$^{\pm}$, p and $\bar{\rm p}$) and neutral (K$^{0}_{\rm S}$, $\Lambda$ and $\bar{\Lambda}$) hadrons measured at mid-rapidity ($|y| < 0.5$) in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV and in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV are presented.
Particle-production ratios are also discussed as a function of $p_{\rm T}$ and average charged-particle density ($\langle dN_{\rm ch}/d\eta \rangle$).
Results from Pb-Pb collisions at LHC energies and from lower-energy experiments
show that the bulk matter created in high-energy nuclear reactions can be quantitatively described in terms of hydrodynamic and statistical models. A comprehensive comparison of ALICE Pb-Pb data with hydrodynamic-inspired and thermal models is presented.
Furthermore, we also report on the multiplicity dependence of light flavor particle production for the smaller systems created in p-Pb collisions and discuss
the disentanglement of initial and final state effects.
The first results obtained in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be presented and compared with the previous
lower energy measurements.
Primary author
Stefania Bufalino
(Universita e INFN Torino (IT))
