# Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## Low-mass dimuon measurements in pp and Pb-Pb collisions with ALICE at the LHC

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Electromagnetic and weak probes

### Speaker

Antonio Uras (Inst. Nat. Phys. Nucl et Particules (FR))

### Description

Low-mass dimuon production, including light neutral mesons $\eta,~\rho,~\omega,~\phi$, provides key information on the hot and dense state of strongly interacting matter produced in ultra-relativistic heavy-ion collisions. The proper baseline for these observations is provided by the measurements of low-mass dimuons in pp collisions, which also allows for the tuning of light particle production models in the largely unexplored LHC energy regime.

ALICE studies low-mass dimuon production at the CERN LHC with the Muon Spectrometer covering the forward rapidity range $2.5 < y < 4$. Observations in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}} = 2.76$ and $5.02$ TeV allowed for the characterisation of $\phi$-meson production in the $p_{\rm T}$ range $2 < p_{\rm T} < 5$ GeV/$c$ and $2 < p_{\rm T} < 7$ GeV/$c$, respectively, giving insight on strangeness production at forward rapidity. $\phi$-meson production has also been studied in pp collisions at $\sqrt{s} = 2.76$, $5.02$, $7$, $8$ and $13$ TeV, offering the unique possibility to test the energy dependence of the production cross section in the common $p_{\rm T}$ range $1.5 < p_{\rm T} < 5$ GeV/$c$. The large statistical sample available at $\sqrt{s} = 13$ TeV also allowed for a new, dedicated study of the $p_{\rm T}$-$y$ dependence of the production cross section of the low-mass mesons.

Collaboration ALICE Experiment Presenter name already specified