9-15 July 2017
Victor J. Koningsberger building
Europe/Amsterdam timezone

$J/\psi$ production as a function of event multiplicity in pp and p-Pb collisions with ALICE

13 Jul 2017, 10:00
BBG 161 ()

BBG 161

oral presentation Small systems (pA) Parallel Small systems


Ionut Cristian Arsene (University of Oslo (NO))


The availability at the LHC of the largest collision energy in pp collisions allows a significant advance in the measurement of $J/\psi$ production as function of event multiplicity. The interesting relative increase observed with data at the LHC at $\sqrt{s} = 7$ TeV and at RHIC at $\sqrt{s} = 200$ GeV is studied now at unprecedented multiplicities for pp collisions. The newest measurement performed at mid-rapidity in pp collisions at $\sqrt{s} = 13$ TeV in the dielectron decay channel, facilitated by triggering on high-multiplicity events, allows the comparison to $J/\psi$ production in p-Pb collisions at similar multiplicities.

We will compare our newest measurements on the $J/\psi$ yields as a function of event multiplicity in pp collisions at $\sqrt{s} = 13$ and 5.02 TeV to those obtained in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV at mid- and forward rapidity and at $\sqrt{s_{\rm NN}} = 8.16$ TeV at forward rapidity. The results are also discussed in comparison to predictions from available theoretical models and to data at lower energies.

List of tracks Small systems (pA)

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