Abstract
The measurement of the (anti-)deuteron production as a function of transverse momentum and event multiplicity in p-Pb collisions at = 5.02 TeV is presented here. (Anti-)deuterons are identified via their energy loss dE/dx in the time projection chamber and via their time-of-flight. Their production will be discussed within the context of thermal and coalescence models.
Highlights
At low multiplicity the d/p ratio in pPb is consistent with the pp data
The ratio rises with multiplicity reaching the value of peripheral PbPb collisions, where it saturates
The chemical freeze-out marks the point in the evolution of particle collisions, where all inelastic processes cease and the chemical composition is xed. They are very successful in describing the hadron production, and the light nuclei production of heavy-ion collisions [14, 15, 16]. This is unexpected, because in thermal models the nuclei yield is xed at Tch ≈ 150 MeV and deuterons can hardly remain intact in this hot environment, Figure 3: The deuteron and anti-deuteron transverse momentum distributions as a function of multiplicity
Summary
Multiplicity Dependence of (Anti-)Deuteron Production in p-Pb Collisions at TeV Measured with ALICE. This content has been downloaded from IOPscience. Please scroll down to see the full text. View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 131.169.4.70 This content was downloaded on 29/05/2015 at 09:20. Please note that terms and conditions apply
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